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// 11 february 2017
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#include "drawtext.h"
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static uiAttributedString *attrstr;
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#define nFeatures 256
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static uiOpenTypeFeatures *features[nFeatures];
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static int curFeature = 0;
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static uiOpenTypeFeatures *addFeature(const char tag[4], uint32_t value)
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{
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uiOpenTypeFeatures *otf;
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if (curFeature >= nFeatures) {
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fprintf(stderr, "TODO (also TODO is there a panic function?)\n");
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exit(EXIT_FAILURE);
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}
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otf = uiNewOpenTypeFeatures();
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uiOpenTypeFeaturesAdd(otf, tag[0], tag[1], tag[2], tag[3], value);
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features[curFeature] = otf;
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curFeature++;
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return otf;
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}
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// some of these examples come from Microsoft's and Apple's lists of typographic features and also https://www.fontfont.com/staticcontent/downloads/FF_OT_User_Guide.pdf
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static void setupAttributedString(void)
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{
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uiAttributeSpec spec;
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size_t start, end;
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const char *next;
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uiOpenTypeFeatures *otf;
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int i;
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attrstr = uiNewAttributedString("uiAttributedString isn't just for plain text! It supports ");
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next = "multiple fonts";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFamily;
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spec.Family = "Courier New";
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "multiple sizes";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeSize;
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spec.Double = 18;
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uiAttributedStringSetAttribute(attrstr,
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&spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "multiple weights";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeWeight;
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spec.Value = (uintptr_t) uiDrawTextWeightBold;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "multiple italics";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeItalic;
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spec.Value = (uintptr_t) uiDrawTextItalicItalic;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "multiple stretches";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeStretch;
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spec.Value = (uintptr_t) uiDrawTextStretchCondensed;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "multiple colors";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeColor;
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// Direct2D "Crimson" (#DC143C)
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spec.R = 0.8627450980392156;
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spec.G = 0.0784313725490196;
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spec.B = 0.2352941176470588;
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spec.A = 0.75;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "multiple backgrounds";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeBackground;
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// Direct2D "Peach Puff" (#FFDAB9)
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// TODO choose a darker color
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spec.R = 1.0;
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spec.G = 0.85490196078431372;
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spec.B = 0.7254901960784313;
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spec.A = 0.5;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "multiple";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeUnderline;
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spec.Value = uiDrawUnderlineStyleSingle;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, " ");
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next = "underlines";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeUnderline;
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spec.Value = uiDrawUnderlineStyleDouble;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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spec.Type = uiAttributeUnderlineColor;
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spec.Value = uiDrawUnderlineColorCustom;
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spec.R = 0.5;
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spec.G = 0.0;
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spec.B = 1.0;
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spec.A = 1.0;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, " (");
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next = "including underlines for spelling correction and the like";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeUnderline;
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spec.Value = uiDrawUnderlineStyleSuggestion;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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spec.Type = uiAttributeUnderlineColor;
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spec.Value = uiDrawUnderlineColorSpelling;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ")");
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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// TODO randomize these ranges better
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// TODO make some overlap to test that
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// TODO also change colors to light foreground dark background
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next = "or any combination of the above";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeWeight;
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spec.Value = (uintptr_t) uiDrawTextWeightBold;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end - 8);
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spec.Type = uiAttributeItalic;
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spec.Value = (uintptr_t) uiDrawTextItalicItalic;
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uiAttributedStringSetAttribute(attrstr, &spec, start + 3, end - 4);
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spec.Type = uiAttributeColor;
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spec.R = 0.8627450980392156;
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spec.G = 0.0784313725490196;
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spec.B = 0.2352941176470588;
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spec.A = 0.75;
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uiAttributedStringSetAttribute(attrstr, &spec, start + 12, end);
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spec.Type = uiAttributeFamily;
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spec.Family = "Helvetica";
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uiAttributedStringSetAttribute(attrstr, &spec, start + 8, end - 1);
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spec.Type = uiAttributeBackground;
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spec.R = 1.0;
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spec.G = 0.85490196078431372;
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spec.B = 0.7254901960784313;
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spec.A = 0.5;
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uiAttributedStringSetAttribute(attrstr, &spec, start + 5, end - 7);
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spec.Type = uiAttributeUnderline;
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spec.Value = uiDrawUnderlineStyleSingle;
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uiAttributedStringSetAttribute(attrstr, &spec, start + 9, end - 1);
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// TODO rewrite this to talk about OpenTpe instead
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// TODO also shorten this to something more useful and that covers the general gist of things (and combines features arbitrarily like the previous demo) when we add a general OpenType demo (see the last TODO in this function)
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uiAttributedStringAppendUnattributed(attrstr, ". In addition, a variety of typographical features are available (depending on the chosen font) that can be switched on (or off, if the font enables them by default): ");
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next = "fi";
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uiAttributedStringAppendUnattributed(attrstr, "standard ligatures like f+i (");
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("liga", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ")");
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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// note the use of LTR marks and RTL embeds to make sure the bidi algorithm doesn't kick in for our demonstration (it will produce incorrect results)
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// see also: https://www.w3.org/International/articles/inline-bidi-markup/#nomarkup
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next = "\xD9\x84\xD8\xA7";
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uiAttributedStringAppendUnattributed(attrstr, "required ligatures like \xE2\x80\xAB\xD9\x84\xE2\x80\xAC+\xE2\x80\xAB\xD8\xA7\xE2\x80\xAC (\xE2\x80\x8E\xE2\x80\xAB");
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("rlig", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, "\xE2\x80\xAC)");
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "ct";
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uiAttributedStringAppendUnattributed(attrstr, "discretionary/rare ligatures like c+t (");
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("dlig", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ")");
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "the";
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uiAttributedStringAppendUnattributed(attrstr, "contextual ligatures like h+e in the (");
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("clig", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ")");
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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otf = addFeature("hlig", 1);
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// This technically isn't what is meant by "historical ligatures", but Core Text's internal AAT-to-OpenType mapping says to include it, so we include it too
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uiOpenTypeFeaturesAdd(otf, 'h', 'i', 's', 't', 1);
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next = "\xC3\x9F";
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uiAttributedStringAppendUnattributed(attrstr, "historical ligatures like the decomposition of \xC3\x9F (");
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = otf;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ")");
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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// TODO a different word than "writing"?
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next = "UnICasE wRITInG";
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("unic", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "316";
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uiAttributedStringAppendUnattributed(attrstr, "proportional (");
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("pnum", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ") and tabular/monospaced (");
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("tnum", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ") numbers");
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "123";
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uiAttributedStringAppendUnattributed(attrstr, "superscipts (");
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("sups", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ")");
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "123";
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uiAttributedStringAppendUnattributed(attrstr, "subscripts (");
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("subs", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ")");
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "1st";
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uiAttributedStringAppendUnattributed(attrstr, "ordinals (");
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("ordn", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ")");
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "H2O";
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uiAttributedStringAppendUnattributed(attrstr, "scientific inferiors (");
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("sinf", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ")");
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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next = "2/3";
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uiAttributedStringAppendUnattributed(attrstr, "fraction forms (");
|
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start = uiAttributedStringLen(attrstr);
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end = start + strlen(next);
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#if 0 /* TODO */
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uiAttributedStringAppendUnattributed(attrstr, next);
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spec.Type = uiAttributeFractionForms;
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spec.Value = uiAttributeFractionFormNone;
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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#endif
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start = uiAttributedStringLen(attrstr);
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||||
end = start + strlen(next);
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uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
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spec.Features = addFeature("afrc", 1);
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uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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uiAttributedStringAppendUnattributed(attrstr, ", ");
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start = uiAttributedStringLen(attrstr);
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||||
end = start + strlen(next);
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||||
uiAttributedStringAppendUnattributed(attrstr, next);
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||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("frac", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "0";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "slashed zeroes (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("zero", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("zero", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
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||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
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||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
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||||
next = "\xCE\xA0\xCE\xA3";
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uiAttributedStringAppendUnattributed(attrstr, "mathematical greek (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("mgrk", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("mgrk", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "qwertyuiop\xE2\x80\xA2";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "ornamental forms (");
|
||||
for (i = 1; i < 11; i++) {
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("ornm", i);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
next = "\xE2\x80\xA2";
|
||||
}
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "g";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "specific forms/alternates (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("aalt", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("aalt", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "ABCDEFGQWERTY";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "titling capital forms (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("titl", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("titl", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "\xE7\x80\x86";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "alternate Han character forms (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("jp78", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("jp83", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
otf = addFeature("onum", 0);
|
||||
// Core Text's internal AAT-to-OpenType mapping says to include this, so we include it too
|
||||
// TODO is it always set?
|
||||
uiOpenTypeFeaturesAdd(otf, 'l', 'n', 'u', 'm', 0);
|
||||
next = "0123456789";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "lowercase numbers (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = otf;
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
otf = addFeature("onum", 1);
|
||||
uiOpenTypeFeaturesAdd(otf, 'l', 'n', 'u', 'm', 1);
|
||||
spec.Features = otf;
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "\xE4\xBC\xBD";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "hanja to hangul translation (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("hngl", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("hngl", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "\xE3\x81\x82";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "annotated glyph forms (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("nalt", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("nalt", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("nalt", 4); // AAT inverted circle
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "\xE3\x81\x82";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "ruby forms of kana (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("ruby", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("ruby", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "now is the time";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "italic forms of Latin letters in CJK fonts (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("ital", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("ital", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "{I} > {J}";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "case-sensitive character forms, such as punctuation (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("case", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("case", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "ABC";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "specialized spacing between uppercase letters (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("cpsp", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("cpsp", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "\xE3\x82\xB9\xE3\x83\x98\xE3\x83\x88";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "alternate horizontal (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("hkna", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("hkna", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ") and vertical (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("vkna", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("vkna", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ") kana forms");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "g";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "stylistic alternates (");
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
for (i = 1; i <= 20; i++) {
|
||||
char tag[4];
|
||||
|
||||
tag[0] = 's';
|
||||
tag[1] = 's';
|
||||
tag[2] = '0';
|
||||
if (i >= 10)
|
||||
tag[2] = '1';
|
||||
tag[3] = (i % 10) + '0'; // TODO see how I wrote this elsewhere
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Features = addFeature(tag, 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
}
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "first";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "contextual alternates (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("calt", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("calt", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "FONT";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "swashes (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("swsh", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("swsh", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "Font";
|
||||
uiAttributedStringAppendUnattributed(attrstr, "contextual swashes (");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("cswh", 0);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, " vs. ");
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("cswh", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ")");
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "Small Caps";
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("smcp", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
next = "Petite Caps";
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("pcap", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", ");
|
||||
|
||||
next = "SMALL UPPERCASES";
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("c2sp", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
uiAttributedStringAppendUnattributed(attrstr, ", and ");
|
||||
next = "PETITE UPPERCASES";
|
||||
start = uiAttributedStringLen(attrstr);
|
||||
end = start + strlen(next);
|
||||
uiAttributedStringAppendUnattributed(attrstr, next);
|
||||
spec.Type = uiAttributeFeatures;
|
||||
spec.Features = addFeature("c2pc", 1);
|
||||
uiAttributedStringSetAttribute(attrstr, &spec, start, end);
|
||||
|
||||
uiAttributedStringAppendUnattributed(attrstr, ".");
|
||||
|
||||
// TODO write a dedicated example for experimenting with typographic features like the one in gtk3-demo
|
||||
}
|
||||
|
||||
static char fontFamily[] = "Times New Roman";
|
||||
// TODO should be const; look at constructor function?
|
||||
static uiDrawFontDescriptor defaultFont = {
|
||||
.Family = fontFamily,
|
||||
.Size = 12,
|
||||
.Weight = uiDrawTextWeightNormal,
|
||||
.Italic = uiDrawTextItalicNormal,
|
||||
.Stretch = uiDrawTextStretchNormal,
|
||||
};
|
||||
static uiDrawTextLayoutParams params;
|
||||
|
||||
#define margins 10
|
||||
|
||||
static uiBox *panel;
|
||||
static uiCheckbox *showLineBounds;
|
||||
static uiFontButton *fontButton;
|
||||
|
||||
// TODO should be const?
|
||||
static uiDrawBrush fillBrushes[4] = {
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 1.0,
|
||||
.G = 0.0,
|
||||
.B = 0.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 1.0,
|
||||
.B = 0.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 0.0,
|
||||
.B = 1.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 1.0,
|
||||
.B = 1.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
};
|
||||
|
||||
static void draw(uiAreaDrawParams *p)
|
||||
{
|
||||
uiDrawPath *path;
|
||||
uiDrawTextLayout *layout;
|
||||
uiDrawBrush b;
|
||||
|
||||
b.Type = uiDrawBrushTypeSolid;
|
||||
|
||||
// only clip the text, not the guides
|
||||
uiDrawSave(p->Context);
|
||||
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathAddRectangle(path, margins, margins,
|
||||
p->AreaWidth - 2 * margins,
|
||||
p->AreaHeight - 2 * margins);
|
||||
uiDrawPathEnd(path);
|
||||
uiDrawClip(p->Context, path);
|
||||
uiDrawFreePath(path);
|
||||
|
||||
params.Width = p->AreaWidth - 2 * margins;
|
||||
layout = uiDrawNewTextLayout(¶ms);
|
||||
uiDrawText(p->Context, layout, margins, margins);
|
||||
|
||||
uiDrawRestore(p->Context);
|
||||
|
||||
if (uiCheckboxChecked(showLineBounds)) {
|
||||
uiDrawTextLayoutLineMetrics m;
|
||||
int i, n;
|
||||
int fill = 0;
|
||||
|
||||
n = uiDrawTextLayoutNumLines(layout);
|
||||
for (i = 0; i < n; i++) {
|
||||
uiDrawTextLayoutLineGetMetrics(layout, i, &m);
|
||||
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathAddRectangle(path, margins + m.X, margins + m.Y,
|
||||
m.Width, m.Height);
|
||||
uiDrawPathEnd(path);
|
||||
uiDrawFill(p->Context, path, fillBrushes + fill);
|
||||
uiDrawFreePath(path);
|
||||
fill = (fill + 1) % 4;
|
||||
}
|
||||
}
|
||||
|
||||
uiDrawFreeTextLayout(layout);
|
||||
}
|
||||
|
||||
static struct example attributesExample;
|
||||
|
||||
static void changeFont(uiFontButton *b, void *data)
|
||||
{
|
||||
if (defaultFont.Family != fontFamily)
|
||||
uiFreeText(defaultFont.Family);
|
||||
// TODO rename defaultFont
|
||||
uiFontButtonFont(fontButton, &defaultFont);
|
||||
redraw();
|
||||
}
|
||||
|
||||
// TODO share?
|
||||
static void checkboxChecked(uiCheckbox *c, void *data)
|
||||
{
|
||||
redraw();
|
||||
}
|
||||
|
||||
static uiCheckbox *newCheckbox(const char *text)
|
||||
{
|
||||
uiCheckbox *c;
|
||||
|
||||
c = uiNewCheckbox(text);
|
||||
uiCheckboxOnToggled(c, checkboxChecked, NULL);
|
||||
uiBoxAppend(panel, uiControl(c), 0);
|
||||
return c;
|
||||
}
|
||||
|
||||
struct example *mkAttributesExample(void)
|
||||
{
|
||||
panel = uiNewVerticalBox();
|
||||
showLineBounds = newCheckbox("Show Line Bounds");
|
||||
fontButton = uiNewFontButton();
|
||||
uiFontButtonOnChanged(fontButton, changeFont, NULL);
|
||||
// TODO set the font button to the current defaultFont
|
||||
uiBoxAppend(panel, uiControl(fontButton), 0);
|
||||
|
||||
attributesExample.name = "Attributed Text";
|
||||
attributesExample.panel = uiControl(panel);
|
||||
attributesExample.draw = draw;
|
||||
attributesExample.mouse = NULL;
|
||||
attributesExample.key = NULL;
|
||||
|
||||
setupAttributedString();
|
||||
params.String = attrstr;
|
||||
params.DefaultFont = &defaultFont;
|
||||
params.Align = uiDrawTextAlignLeft;
|
||||
|
||||
return &attributesExample;
|
||||
}
|
||||
@@ -0,0 +1,267 @@
|
||||
// 17 january 2017
|
||||
#include "drawtext.h"
|
||||
|
||||
static const char *text =
|
||||
"It is with a kind of fear that I begin to write the history of my life. "
|
||||
"I have, as it were, a superstitious hesitation in lifting the veil that "
|
||||
"clings about my childhood like a golden mist. The task of writing an "
|
||||
"autobiography is a difficult one. When I try to classify my earliest "
|
||||
"impressions, I find that fact and fancy look alike across the years that "
|
||||
"link the past with the present. The woman paints the child's experiences "
|
||||
"in her own fantasy. A few impressions stand out vividly from the first "
|
||||
"years of my life; but \"the shadows of the prison-house are on the rest.\" "
|
||||
"Besides, many of the joys and sorrows of childhood have lost their "
|
||||
"poignancy; and many incidents of vital importance in my early education "
|
||||
"have been forgotten in the excitement of great discoveries. In order, "
|
||||
"therefore, not to be tedious I shall try to present in a series of "
|
||||
"sketches only the episodes that seem to me to be the most interesting "
|
||||
"and important."
|
||||
"";
|
||||
static char fontFamily[] = "Palatino";
|
||||
// TODO should be const; look at constructor function?
|
||||
static uiDrawFontDescriptor defaultFont = {
|
||||
.Family = fontFamily,
|
||||
.Size = 18,
|
||||
.Weight = uiDrawTextWeightNormal,
|
||||
.Italic = uiDrawTextItalicNormal,
|
||||
.Stretch = uiDrawTextStretchNormal,
|
||||
};
|
||||
static uiAttributedString *attrstr;
|
||||
static uiDrawTextLayoutParams params;
|
||||
|
||||
#define margins 10
|
||||
|
||||
static uiBox *panel;
|
||||
static uiCheckbox *showExtents;
|
||||
static uiCheckbox *showLineBounds;
|
||||
static uiCheckbox *showLineGuides;
|
||||
|
||||
// TODO should this be const?
|
||||
static double strokeDashes[] = { 5, 2 };
|
||||
// TODO this should be const
|
||||
static uiDrawStrokeParams strokeParams = {
|
||||
.Cap = uiDrawLineCapFlat,
|
||||
.Join = uiDrawLineJoinMiter,
|
||||
.Thickness = 1,
|
||||
.MiterLimit = uiDrawDefaultMiterLimit,
|
||||
.Dashes = strokeDashes,
|
||||
.NumDashes = 2,
|
||||
.DashPhase = 0,
|
||||
};
|
||||
|
||||
// TODO should be const?
|
||||
static uiDrawBrush fillBrushes[4] = {
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 1.0,
|
||||
.G = 0.0,
|
||||
.B = 0.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 1.0,
|
||||
.B = 0.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 0.0,
|
||||
.B = 1.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 1.0,
|
||||
.B = 1.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
};
|
||||
// TODO come up with better colors
|
||||
static uiDrawBrush strokeBrushes[3] = {
|
||||
// baseline
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.5,
|
||||
.G = 0.5,
|
||||
.B = 0.0,
|
||||
.A = 0.75,
|
||||
},
|
||||
// ascent
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 1.0,
|
||||
.G = 0.0,
|
||||
.B = 1.0,
|
||||
.A = 0.75,
|
||||
},
|
||||
// descent
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.5,
|
||||
.G = 0.75,
|
||||
.B = 1.0,
|
||||
.A = 0.75,
|
||||
},
|
||||
};
|
||||
|
||||
static void draw(uiAreaDrawParams *p)
|
||||
{
|
||||
uiDrawPath *path;
|
||||
uiDrawTextLayout *layout;
|
||||
uiDrawBrush b;
|
||||
|
||||
b.Type = uiDrawBrushTypeSolid;
|
||||
|
||||
// only clip the text, not the guides
|
||||
uiDrawSave(p->Context);
|
||||
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathAddRectangle(path, margins, margins,
|
||||
p->AreaWidth - 2 * margins,
|
||||
p->AreaHeight - 2 * margins);
|
||||
uiDrawPathEnd(path);
|
||||
uiDrawClip(p->Context, path);
|
||||
uiDrawFreePath(path);
|
||||
|
||||
// TODO get rid of this later
|
||||
#if 0
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathAddRectangle(path, -100, -100,
|
||||
p->AreaWidth * 2,
|
||||
p->AreaHeight * 2);
|
||||
uiDrawPathEnd(path);
|
||||
b.R = 0.0;
|
||||
b.G = 1.0;
|
||||
b.B = 0.0;
|
||||
b.A = 1.0;
|
||||
uiDrawFill(p->Context, path, &b);
|
||||
uiDrawFreePath(path);
|
||||
#endif
|
||||
|
||||
params.Width = p->AreaWidth - 2 * margins;
|
||||
layout = uiDrawNewTextLayout(¶ms);
|
||||
uiDrawText(p->Context, layout, margins, margins);
|
||||
|
||||
uiDrawRestore(p->Context);
|
||||
|
||||
if (uiCheckboxChecked(showExtents)) {
|
||||
double width, height;
|
||||
|
||||
uiDrawTextLayoutExtents(layout, &width, &height);
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathAddRectangle(path, margins, margins,
|
||||
width, height);
|
||||
uiDrawPathEnd(path);
|
||||
b.R = 1.0;
|
||||
b.G = 0.0;
|
||||
b.B = 1.0;
|
||||
b.A = 0.5;
|
||||
uiDrawStroke(p->Context, path, &b, &strokeParams);
|
||||
uiDrawFreePath(path);
|
||||
}
|
||||
|
||||
if (uiCheckboxChecked(showLineBounds) || uiCheckboxChecked(showLineGuides)) {
|
||||
uiDrawTextLayoutLineMetrics m;
|
||||
int i, n;
|
||||
int fill = 0;
|
||||
|
||||
n = uiDrawTextLayoutNumLines(layout);
|
||||
for (i = 0; i < n; i++) {
|
||||
uiDrawTextLayoutLineGetMetrics(layout, i, &m);
|
||||
|
||||
if (uiCheckboxChecked(showLineBounds)) {
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathAddRectangle(path, margins + m.X, margins + m.Y,
|
||||
m.Width, m.Height);
|
||||
uiDrawPathEnd(path);
|
||||
uiDrawFill(p->Context, path, fillBrushes + fill);
|
||||
uiDrawFreePath(path);
|
||||
fill = (fill + 1) % 4;
|
||||
}
|
||||
if (uiCheckboxChecked(showLineGuides)) {
|
||||
// baseline
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathNewFigure(path,
|
||||
margins + m.X,
|
||||
margins + m.BaselineY);
|
||||
uiDrawPathLineTo(path,
|
||||
margins + m.X + m.Width,
|
||||
margins + m.BaselineY);
|
||||
uiDrawPathEnd(path);
|
||||
uiDrawStroke(p->Context, path, &(strokeBrushes[0]), &strokeParams);
|
||||
uiDrawFreePath(path);
|
||||
|
||||
// ascent line
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathNewFigure(path,
|
||||
margins + m.X,
|
||||
margins + m.BaselineY - m.Ascent);
|
||||
uiDrawPathLineTo(path,
|
||||
margins + m.X + m.Width,
|
||||
margins + m.BaselineY - m.Ascent);
|
||||
uiDrawPathEnd(path);
|
||||
uiDrawStroke(p->Context, path, &(strokeBrushes[1]), &strokeParams);
|
||||
uiDrawFreePath(path);
|
||||
|
||||
// descent line
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathNewFigure(path,
|
||||
margins + m.X,
|
||||
margins + m.BaselineY + m.Descent);
|
||||
uiDrawPathLineTo(path,
|
||||
margins + m.X + m.Width,
|
||||
margins + m.BaselineY + m.Descent);
|
||||
uiDrawPathEnd(path);
|
||||
uiDrawStroke(p->Context, path, &(strokeBrushes[2]), &strokeParams);
|
||||
uiDrawFreePath(path);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
uiDrawFreeTextLayout(layout);
|
||||
}
|
||||
|
||||
static struct example basicExample;
|
||||
|
||||
// TODO share?
|
||||
static void checkboxChecked(uiCheckbox *c, void *data)
|
||||
{
|
||||
redraw();
|
||||
}
|
||||
|
||||
static uiCheckbox *newCheckbox(const char *text)
|
||||
{
|
||||
uiCheckbox *c;
|
||||
|
||||
c = uiNewCheckbox(text);
|
||||
uiCheckboxOnToggled(c, checkboxChecked, NULL);
|
||||
uiBoxAppend(panel, uiControl(c), 0);
|
||||
return c;
|
||||
}
|
||||
|
||||
struct example *mkBasicExample(void)
|
||||
{
|
||||
panel = uiNewVerticalBox();
|
||||
showExtents = newCheckbox("Show Layout Extents");
|
||||
showLineBounds = newCheckbox("Show Line Bounds");
|
||||
showLineGuides = newCheckbox("Show Line Guides");
|
||||
|
||||
basicExample.name = "Basic Paragraph of Text";
|
||||
basicExample.panel = uiControl(panel);
|
||||
basicExample.draw = draw;
|
||||
basicExample.mouse = NULL;
|
||||
basicExample.key = NULL;
|
||||
|
||||
attrstr = uiNewAttributedString(text);
|
||||
params.String = attrstr;
|
||||
params.DefaultFont = &defaultFont;
|
||||
params.Align = uiDrawTextAlignLeft;
|
||||
|
||||
return &basicExample;
|
||||
}
|
||||
|
||||
// TODO on GTK+ an area by itself in a window doesn't get expand properties set properly?
|
||||
@@ -0,0 +1,29 @@
|
||||
// 20 january 2017
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include "../../ui.h"
|
||||
|
||||
struct example {
|
||||
const char *name;
|
||||
uiControl *panel;
|
||||
void (*draw)(uiAreaDrawParams *p);
|
||||
void (*mouse)(uiAreaMouseEvent *e);
|
||||
int (*key)(uiAreaKeyEvent *e);
|
||||
// TODO key?
|
||||
};
|
||||
|
||||
// main.c
|
||||
extern void redraw(void);
|
||||
|
||||
// basic.c
|
||||
extern struct example *mkBasicExample(void);
|
||||
|
||||
// hittest.c
|
||||
extern struct example *mkHitTestExample(void);
|
||||
|
||||
// attributes.c
|
||||
extern struct example *mkAttributesExample(void);
|
||||
|
||||
// emptystr_hittest.c
|
||||
extern struct example *mkEmptyStringExample(void);
|
||||
@@ -0,0 +1,254 @@
|
||||
// 20 january 2017
|
||||
#include "drawtext.h"
|
||||
|
||||
// TODO FOR THIS FILE
|
||||
// get rid of it once we rewrite this example (which requires having more fine-grained scrolling control)
|
||||
|
||||
// TODO double-check ligatures on all platforms to make sure we can place the cursor at the right place
|
||||
// TODO the hiding and showing does not work properly on GTK+
|
||||
// TODO using the arrow keys allows us to walk back to the end of the line on some platforms (TODO which?); IIRC arrow keys shouldn't do that
|
||||
// TODO make sure to check the cursor positions of RTL on all platforms
|
||||
|
||||
static const char *text = "";
|
||||
static char fontFamily[] = "Helvetica";
|
||||
static uiDrawFontDescriptor defaultFont = {
|
||||
.Family = fontFamily,
|
||||
.Size = 14,
|
||||
.Weight = uiDrawTextWeightNormal,
|
||||
.Italic = uiDrawTextItalicNormal,
|
||||
.Stretch = uiDrawTextStretchNormal,
|
||||
};
|
||||
static uiAttributedString *attrstr;
|
||||
static uiDrawTextLayoutParams params;
|
||||
|
||||
#define margins 10
|
||||
|
||||
static uiBox *panel;
|
||||
static uiBox *vbox;
|
||||
static uiLabel *caretLabel;
|
||||
static uiCheckbox *showLineBounds;
|
||||
static uiFontButton *fontButton;
|
||||
static uiCombobox *textAlign;
|
||||
|
||||
static int caretLine = -1;
|
||||
static size_t caretPos;
|
||||
|
||||
// TODO should be const?
|
||||
static uiDrawBrush fillBrushes[4] = {
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 1.0,
|
||||
.G = 0.0,
|
||||
.B = 0.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 1.0,
|
||||
.B = 0.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 0.0,
|
||||
.B = 1.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 1.0,
|
||||
.B = 1.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
};
|
||||
|
||||
static void draw(uiAreaDrawParams *p)
|
||||
{
|
||||
uiDrawPath *path;
|
||||
uiDrawTextLayout *layout;
|
||||
uiDrawTextLayoutLineMetrics m;
|
||||
|
||||
// only clip the text, not the guides
|
||||
uiDrawSave(p->Context);
|
||||
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathAddRectangle(path, margins, margins,
|
||||
p->AreaWidth - 2 * margins,
|
||||
p->AreaHeight - 2 * margins);
|
||||
uiDrawPathEnd(path);
|
||||
uiDrawClip(p->Context, path);
|
||||
uiDrawFreePath(path);
|
||||
|
||||
params.Width = p->AreaWidth - 2 * margins;
|
||||
layout = uiDrawNewTextLayout(¶ms);
|
||||
uiDrawText(p->Context, layout, margins, margins);
|
||||
|
||||
uiDrawRestore(p->Context);
|
||||
|
||||
if (caretLine == -1) {
|
||||
caretLine = uiDrawTextLayoutNumLines(layout) - 1;
|
||||
caretPos = uiAttributedStringLen(attrstr);
|
||||
}
|
||||
uiDrawCaret(p->Context, margins, margins,
|
||||
layout, caretPos, &caretLine);
|
||||
|
||||
if (uiCheckboxChecked(showLineBounds)) {
|
||||
int i, n;
|
||||
int fill = 0;
|
||||
|
||||
n = uiDrawTextLayoutNumLines(layout);
|
||||
for (i = 0; i < n; i++) {
|
||||
uiDrawTextLayoutLineGetMetrics(layout, i, &m);
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathAddRectangle(path, margins + m.X, margins + m.Y,
|
||||
m.Width, m.Height);
|
||||
uiDrawPathEnd(path);
|
||||
uiDrawFill(p->Context, path, fillBrushes + fill);
|
||||
uiDrawFreePath(path);
|
||||
fill = (fill + 1) % 4;
|
||||
}
|
||||
}
|
||||
|
||||
uiDrawFreeTextLayout(layout);
|
||||
}
|
||||
|
||||
static void mouse(uiAreaMouseEvent *e)
|
||||
{
|
||||
uiDrawTextLayout *layout;
|
||||
char labelText[128];
|
||||
|
||||
if (e->Down != 1)
|
||||
return;
|
||||
|
||||
params.Width = e->AreaWidth - 2 * margins;
|
||||
layout = uiDrawNewTextLayout(¶ms);
|
||||
uiDrawTextLayoutHitTest(layout,
|
||||
e->X - margins, e->Y - margins,
|
||||
&caretPos, &caretLine);
|
||||
uiDrawFreeTextLayout(layout);
|
||||
|
||||
// TODO move this into the draw handler so it is reflected by keyboard-based position changes
|
||||
// urgh %zd is not supported by MSVC with sprintf()
|
||||
// TODO get that part in test/ about having no other option
|
||||
sprintf(labelText, "pos %d line %d",
|
||||
(int) caretPos, caretLine);
|
||||
uiLabelSetText(caretLabel, labelText);
|
||||
|
||||
redraw();
|
||||
}
|
||||
|
||||
static int key(uiAreaKeyEvent *e)
|
||||
{
|
||||
size_t grapheme;
|
||||
|
||||
if (e->Up)
|
||||
return 0;
|
||||
if (e->Key != 0)
|
||||
return 0;
|
||||
switch (e->ExtKey) {
|
||||
case uiExtKeyUp:
|
||||
// TODO
|
||||
return 1;
|
||||
case uiExtKeyDown:
|
||||
// TODO
|
||||
return 1;
|
||||
case uiExtKeyLeft:
|
||||
grapheme = uiAttributedStringByteIndexToGrapheme(attrstr, caretPos);
|
||||
if (grapheme == 0)
|
||||
return 0;
|
||||
grapheme--;
|
||||
caretPos = uiAttributedStringGraphemeToByteIndex(attrstr, grapheme);
|
||||
redraw();
|
||||
return 1;
|
||||
case uiExtKeyRight:
|
||||
grapheme = uiAttributedStringByteIndexToGrapheme(attrstr, caretPos);
|
||||
if (grapheme == uiAttributedStringNumGraphemes(attrstr))
|
||||
return 0;
|
||||
grapheme++;
|
||||
caretPos = uiAttributedStringGraphemeToByteIndex(attrstr, grapheme);
|
||||
redraw();
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct example hitTestExample;
|
||||
|
||||
// TODO share?
|
||||
static void checkboxChecked(uiCheckbox *c, void *data)
|
||||
{
|
||||
redraw();
|
||||
}
|
||||
|
||||
static void changeFont(uiFontButton *b, void *data)
|
||||
{
|
||||
if (defaultFont.Family != fontFamily)
|
||||
uiFreeText(defaultFont.Family);
|
||||
// TODO rename defaultFont
|
||||
uiFontButtonFont(fontButton, &defaultFont);
|
||||
printf("{\n\tfamily: %s\n\tsize: %g\n\tweight: %d\n\titalic: %d\n\tstretch: %d\n}\n",
|
||||
defaultFont.Family,
|
||||
defaultFont.Size,
|
||||
(int) (defaultFont.Weight),
|
||||
(int) (defaultFont.Italic),
|
||||
(int) (defaultFont.Stretch));
|
||||
redraw();
|
||||
}
|
||||
|
||||
static void changeTextAlign(uiCombobox *c, void *data)
|
||||
{
|
||||
// note the order of the items added below
|
||||
params.Align = (uiDrawTextAlign) uiComboboxSelected(textAlign);
|
||||
redraw();
|
||||
}
|
||||
|
||||
// TODO share?
|
||||
static uiCheckbox *newCheckbox(uiBox *box, const char *text)
|
||||
{
|
||||
uiCheckbox *c;
|
||||
|
||||
c = uiNewCheckbox(text);
|
||||
uiCheckboxOnToggled(c, checkboxChecked, NULL);
|
||||
uiBoxAppend(box, uiControl(c), 0);
|
||||
return c;
|
||||
}
|
||||
|
||||
struct example *mkEmptyStringExample(void)
|
||||
{
|
||||
panel = uiNewHorizontalBox();
|
||||
vbox = uiNewVerticalBox();
|
||||
// TODO the second vbox causes this not to stretch at least on OS X
|
||||
uiBoxAppend(panel, uiControl(vbox), 1);
|
||||
caretLabel = uiNewLabel("Caret information is shown here");
|
||||
uiBoxAppend(vbox, uiControl(caretLabel), 0);
|
||||
showLineBounds = newCheckbox(vbox, "Show Line Bounds (for debugging metrics)");
|
||||
vbox = uiNewVerticalBox();
|
||||
uiBoxAppend(panel, uiControl(vbox), 0);
|
||||
fontButton = uiNewFontButton();
|
||||
uiFontButtonOnChanged(fontButton, changeFont, NULL);
|
||||
// TODO set the font button to the current defaultFont
|
||||
uiBoxAppend(vbox, uiControl(fontButton), 0);
|
||||
textAlign = uiNewCombobox();
|
||||
// note that these are in the order in the enum
|
||||
uiComboboxAppend(textAlign, "Left");
|
||||
uiComboboxAppend(textAlign, "Center");
|
||||
uiComboboxAppend(textAlign, "Right");
|
||||
uiComboboxOnSelected(textAlign, changeTextAlign, NULL);
|
||||
uiBoxAppend(vbox, uiControl(textAlign), 0);
|
||||
|
||||
hitTestExample.name = "Empty String";
|
||||
hitTestExample.panel = uiControl(panel);
|
||||
hitTestExample.draw = draw;
|
||||
hitTestExample.mouse = mouse;
|
||||
hitTestExample.key = key;
|
||||
|
||||
attrstr = uiNewAttributedString(text);
|
||||
params.String = attrstr;
|
||||
params.DefaultFont = &defaultFont;
|
||||
params.Align = uiDrawTextAlignLeft;
|
||||
|
||||
return &hitTestExample;
|
||||
}
|
||||
@@ -0,0 +1,262 @@
|
||||
// 20 january 2017
|
||||
#include "drawtext.h"
|
||||
|
||||
// TODO double-check ligatures on all platforms to make sure we can place the cursor at the right place
|
||||
// TODO using the arrow keys allows us to walk back to the end of the line on some platforms (TODO which?); IIRC arrow keys shouldn't do that
|
||||
// TODO make sure to check the cursor positions of RTL on all platforms
|
||||
|
||||
static const char *text =
|
||||
"Each of the glyphs an end user interacts with are called graphemes. "
|
||||
"If you enter a byte range in the text boxes below and click the button, you can see the blue box move to surround that byte range, as well as what the actual byte range necessary is. "
|
||||
// TODO rephrase this; I don't think this code will use those grapheme functions...
|
||||
"You'll also see the index of the first grapheme; uiAttributedString has facilities for converting between UTF-8 code points and grapheme indices. "
|
||||
"Additionally, click on the string to move the caret. Watch the status text at the bottom change too. "
|
||||
"That being said: "
|
||||
"\xC3\x93O\xCC\x81 (combining accents) "
|
||||
"A\xCC\xAA\xEF\xB8\xA0 (multiple combining characters) "
|
||||
"\xE2\x80\xAE#\xE2\x80\xAC (RTL glyph) "
|
||||
"\xF0\x9F\x92\xBB (non-BMP character) "
|
||||
"\xF0\x9F\x92\xBB\xCC\x80 (combined non-BMP character; may render strangely) "
|
||||
"";
|
||||
static char fontFamily[] = "Helvetica";
|
||||
static uiDrawFontDescriptor defaultFont = {
|
||||
.Family = fontFamily,
|
||||
.Size = 14,
|
||||
.Weight = uiDrawTextWeightNormal,
|
||||
.Italic = uiDrawTextItalicNormal,
|
||||
.Stretch = uiDrawTextStretchNormal,
|
||||
};
|
||||
static uiAttributedString *attrstr;
|
||||
static uiDrawTextLayoutParams params;
|
||||
|
||||
#define margins 10
|
||||
|
||||
static uiBox *panel;
|
||||
static uiBox *vbox;
|
||||
static uiLabel *caretLabel;
|
||||
static uiCheckbox *showLineBounds;
|
||||
static uiFontButton *fontButton;
|
||||
static uiCombobox *textAlign;
|
||||
|
||||
static int caretLine = -1;
|
||||
static size_t caretPos;
|
||||
|
||||
// TODO should be const?
|
||||
static uiDrawBrush fillBrushes[4] = {
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 1.0,
|
||||
.G = 0.0,
|
||||
.B = 0.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 1.0,
|
||||
.B = 0.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 0.0,
|
||||
.B = 1.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
{
|
||||
.Type = uiDrawBrushTypeSolid,
|
||||
.R = 0.0,
|
||||
.G = 1.0,
|
||||
.B = 1.0,
|
||||
.A = 0.5,
|
||||
},
|
||||
};
|
||||
|
||||
static void draw(uiAreaDrawParams *p)
|
||||
{
|
||||
uiDrawPath *path;
|
||||
uiDrawTextLayout *layout;
|
||||
uiDrawTextLayoutLineMetrics m;
|
||||
|
||||
// only clip the text, not the guides
|
||||
uiDrawSave(p->Context);
|
||||
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathAddRectangle(path, margins, margins,
|
||||
p->AreaWidth - 2 * margins,
|
||||
p->AreaHeight - 2 * margins);
|
||||
uiDrawPathEnd(path);
|
||||
uiDrawClip(p->Context, path);
|
||||
uiDrawFreePath(path);
|
||||
|
||||
params.Width = p->AreaWidth - 2 * margins;
|
||||
layout = uiDrawNewTextLayout(¶ms);
|
||||
uiDrawText(p->Context, layout, margins, margins);
|
||||
|
||||
uiDrawRestore(p->Context);
|
||||
|
||||
if (caretLine == -1) {
|
||||
caretLine = uiDrawTextLayoutNumLines(layout) - 1;
|
||||
caretPos = uiAttributedStringLen(attrstr);
|
||||
}
|
||||
uiDrawCaret(p->Context, margins, margins,
|
||||
layout, caretPos, &caretLine);
|
||||
|
||||
if (uiCheckboxChecked(showLineBounds)) {
|
||||
int i, n;
|
||||
int fill = 0;
|
||||
|
||||
n = uiDrawTextLayoutNumLines(layout);
|
||||
for (i = 0; i < n; i++) {
|
||||
uiDrawTextLayoutLineGetMetrics(layout, i, &m);
|
||||
path = uiDrawNewPath(uiDrawFillModeWinding);
|
||||
uiDrawPathAddRectangle(path, margins + m.X, margins + m.Y,
|
||||
m.Width, m.Height);
|
||||
uiDrawPathEnd(path);
|
||||
uiDrawFill(p->Context, path, fillBrushes + fill);
|
||||
uiDrawFreePath(path);
|
||||
fill = (fill + 1) % 4;
|
||||
}
|
||||
}
|
||||
|
||||
uiDrawFreeTextLayout(layout);
|
||||
}
|
||||
|
||||
static void mouse(uiAreaMouseEvent *e)
|
||||
{
|
||||
uiDrawTextLayout *layout;
|
||||
char labelText[128];
|
||||
|
||||
if (e->Down != 1)
|
||||
return;
|
||||
|
||||
params.Width = e->AreaWidth - 2 * margins;
|
||||
layout = uiDrawNewTextLayout(¶ms);
|
||||
uiDrawTextLayoutHitTest(layout,
|
||||
e->X - margins, e->Y - margins,
|
||||
&caretPos, &caretLine);
|
||||
uiDrawFreeTextLayout(layout);
|
||||
|
||||
// TODO move this into the draw handler so it is reflected by keyboard-based position changes
|
||||
// urgh %zd is not supported by MSVC with sprintf()
|
||||
// TODO get that part in test/ about having no other option
|
||||
sprintf(labelText, "pos %d line %d",
|
||||
(int) caretPos, caretLine);
|
||||
uiLabelSetText(caretLabel, labelText);
|
||||
|
||||
redraw();
|
||||
}
|
||||
|
||||
static int key(uiAreaKeyEvent *e)
|
||||
{
|
||||
size_t grapheme;
|
||||
|
||||
if (e->Up)
|
||||
return 0;
|
||||
if (e->Key != 0)
|
||||
return 0;
|
||||
switch (e->ExtKey) {
|
||||
case uiExtKeyUp:
|
||||
// TODO
|
||||
return 1;
|
||||
case uiExtKeyDown:
|
||||
// TODO
|
||||
return 1;
|
||||
case uiExtKeyLeft:
|
||||
grapheme = uiAttributedStringByteIndexToGrapheme(attrstr, caretPos);
|
||||
if (grapheme == 0)
|
||||
return 0;
|
||||
grapheme--;
|
||||
caretPos = uiAttributedStringGraphemeToByteIndex(attrstr, grapheme);
|
||||
redraw();
|
||||
return 1;
|
||||
case uiExtKeyRight:
|
||||
grapheme = uiAttributedStringByteIndexToGrapheme(attrstr, caretPos);
|
||||
if (grapheme == uiAttributedStringNumGraphemes(attrstr))
|
||||
return 0;
|
||||
grapheme++;
|
||||
caretPos = uiAttributedStringGraphemeToByteIndex(attrstr, grapheme);
|
||||
redraw();
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct example hitTestExample;
|
||||
|
||||
// TODO share?
|
||||
static void checkboxChecked(uiCheckbox *c, void *data)
|
||||
{
|
||||
redraw();
|
||||
}
|
||||
|
||||
static void changeFont(uiFontButton *b, void *data)
|
||||
{
|
||||
if (defaultFont.Family != fontFamily)
|
||||
uiFreeText(defaultFont.Family);
|
||||
// TODO rename defaultFont
|
||||
uiFontButtonFont(fontButton, &defaultFont);
|
||||
printf("{\n\tfamily: %s\n\tsize: %g\n\tweight: %d\n\titalic: %d\n\tstretch: %d\n}\n",
|
||||
defaultFont.Family,
|
||||
defaultFont.Size,
|
||||
(int) (defaultFont.Weight),
|
||||
(int) (defaultFont.Italic),
|
||||
(int) (defaultFont.Stretch));
|
||||
redraw();
|
||||
}
|
||||
|
||||
static void changeTextAlign(uiCombobox *c, void *data)
|
||||
{
|
||||
// note the order of the items added below
|
||||
params.Align = (uiDrawTextAlign) uiComboboxSelected(textAlign);
|
||||
redraw();
|
||||
}
|
||||
|
||||
// TODO share?
|
||||
static uiCheckbox *newCheckbox(uiBox *box, const char *text)
|
||||
{
|
||||
uiCheckbox *c;
|
||||
|
||||
c = uiNewCheckbox(text);
|
||||
uiCheckboxOnToggled(c, checkboxChecked, NULL);
|
||||
uiBoxAppend(box, uiControl(c), 0);
|
||||
return c;
|
||||
}
|
||||
|
||||
struct example *mkHitTestExample(void)
|
||||
{
|
||||
panel = uiNewHorizontalBox();
|
||||
vbox = uiNewVerticalBox();
|
||||
// TODO the second vbox causes this not to stretch at least on OS X
|
||||
uiBoxAppend(panel, uiControl(vbox), 1);
|
||||
caretLabel = uiNewLabel("Caret information is shown here");
|
||||
uiBoxAppend(vbox, uiControl(caretLabel), 0);
|
||||
showLineBounds = newCheckbox(vbox, "Show Line Bounds (for debugging metrics)");
|
||||
vbox = uiNewVerticalBox();
|
||||
uiBoxAppend(panel, uiControl(vbox), 0);
|
||||
fontButton = uiNewFontButton();
|
||||
uiFontButtonOnChanged(fontButton, changeFont, NULL);
|
||||
// TODO set the font button to the current defaultFont
|
||||
uiBoxAppend(vbox, uiControl(fontButton), 0);
|
||||
textAlign = uiNewCombobox();
|
||||
// note that these are in the order in the enum
|
||||
uiComboboxAppend(textAlign, "Left");
|
||||
uiComboboxAppend(textAlign, "Center");
|
||||
uiComboboxAppend(textAlign, "Right");
|
||||
uiComboboxOnSelected(textAlign, changeTextAlign, NULL);
|
||||
uiBoxAppend(vbox, uiControl(textAlign), 0);
|
||||
|
||||
hitTestExample.name = "Hit-Testing and Grapheme Boundaries";
|
||||
hitTestExample.panel = uiControl(panel);
|
||||
hitTestExample.draw = draw;
|
||||
hitTestExample.mouse = mouse;
|
||||
hitTestExample.key = key;
|
||||
|
||||
attrstr = uiNewAttributedString(text);
|
||||
params.String = attrstr;
|
||||
params.DefaultFont = &defaultFont;
|
||||
params.Align = uiDrawTextAlignLeft;
|
||||
|
||||
return &hitTestExample;
|
||||
}
|
||||
Binary file not shown.
@@ -0,0 +1,136 @@
|
||||
// 17 january 2017
|
||||
#include "drawtext.h"
|
||||
|
||||
static uiWindow *mainwin;
|
||||
static uiBox *box;
|
||||
static uiCombobox *exampleList;
|
||||
static uiArea *area;
|
||||
static uiAreaHandler handler;
|
||||
|
||||
#define nExamples 20
|
||||
static struct example *examples[nExamples];
|
||||
static int curExample = 0;
|
||||
|
||||
static void onExampleChanged(uiCombobox *c, void *data)
|
||||
{
|
||||
uiControlHide(examples[curExample]->panel);
|
||||
curExample = uiComboboxSelected(exampleList);
|
||||
uiControlShow(examples[curExample]->panel);
|
||||
redraw();
|
||||
}
|
||||
|
||||
void redraw(void)
|
||||
{
|
||||
uiAreaQueueRedrawAll(area);
|
||||
}
|
||||
|
||||
static void handlerDraw(uiAreaHandler *a, uiArea *area, uiAreaDrawParams *p)
|
||||
{
|
||||
examples[curExample]->draw(p);
|
||||
}
|
||||
|
||||
static void handlerMouseEvent(uiAreaHandler *a, uiArea *area, uiAreaMouseEvent *e)
|
||||
{
|
||||
if (examples[curExample]->mouse != NULL)
|
||||
examples[curExample]->mouse(e);
|
||||
}
|
||||
|
||||
static void handlerMouseCrossed(uiAreaHandler *ah, uiArea *a, int left)
|
||||
{
|
||||
// do nothing
|
||||
}
|
||||
|
||||
static void handlerDragBroken(uiAreaHandler *ah, uiArea *a)
|
||||
{
|
||||
// do nothing
|
||||
}
|
||||
|
||||
static int handlerKeyEvent(uiAreaHandler *ah, uiArea *a, uiAreaKeyEvent *e)
|
||||
{
|
||||
if (examples[curExample]->key != NULL)
|
||||
return examples[curExample]->key(e);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int onClosing(uiWindow *w, void *data)
|
||||
{
|
||||
uiControlDestroy(uiControl(mainwin));
|
||||
uiQuit();
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int shouldQuit(void *data)
|
||||
{
|
||||
uiControlDestroy(uiControl(mainwin));
|
||||
return 1;
|
||||
}
|
||||
|
||||
int main(void)
|
||||
{
|
||||
uiInitOptions o;
|
||||
const char *err;
|
||||
int n;
|
||||
|
||||
handler.Draw = handlerDraw;
|
||||
handler.MouseEvent = handlerMouseEvent;
|
||||
handler.MouseCrossed = handlerMouseCrossed;
|
||||
handler.DragBroken = handlerDragBroken;
|
||||
handler.KeyEvent = handlerKeyEvent;
|
||||
|
||||
memset(&o, 0, sizeof (uiInitOptions));
|
||||
err = uiInit(&o);
|
||||
if (err != NULL) {
|
||||
fprintf(stderr, "error initializing ui: %s\n", err);
|
||||
uiFreeInitError(err);
|
||||
return 1;
|
||||
}
|
||||
|
||||
uiOnShouldQuit(shouldQuit, NULL);
|
||||
|
||||
mainwin = uiNewWindow("libui Text-Drawing Example", 640, 480, 1);
|
||||
uiWindowOnClosing(mainwin, onClosing, NULL);
|
||||
|
||||
box = uiNewVerticalBox();
|
||||
uiWindowSetChild(mainwin, uiControl(box));
|
||||
|
||||
exampleList = uiNewCombobox();
|
||||
uiBoxAppend(box, uiControl(exampleList), 0);
|
||||
|
||||
area = uiNewArea(&handler);
|
||||
uiBoxAppend(box, uiControl(area), 1);
|
||||
|
||||
n = 0;
|
||||
examples[n] = mkBasicExample();
|
||||
uiComboboxAppend(exampleList, examples[n]->name);
|
||||
uiControlHide(examples[n]->panel);
|
||||
uiBoxAppend(box, examples[n]->panel, 0);
|
||||
n++;
|
||||
examples[n] = mkHitTestExample();
|
||||
uiComboboxAppend(exampleList, examples[n]->name);
|
||||
uiControlHide(examples[n]->panel);
|
||||
uiBoxAppend(box, examples[n]->panel, 0);
|
||||
n++;
|
||||
examples[n] = mkAttributesExample();
|
||||
uiComboboxAppend(exampleList, examples[n]->name);
|
||||
uiControlHide(examples[n]->panel);
|
||||
uiBoxAppend(box, examples[n]->panel, 0);
|
||||
n++;
|
||||
examples[n] = mkEmptyStringExample();
|
||||
uiComboboxAppend(exampleList, examples[n]->name);
|
||||
uiControlHide(examples[n]->panel);
|
||||
uiBoxAppend(box, examples[n]->panel, 0);
|
||||
n++;
|
||||
// and set things up for the initial state
|
||||
uiComboboxSetSelected(exampleList, 0);
|
||||
uiComboboxOnSelected(exampleList, onExampleChanged, NULL);
|
||||
// and set up the first one
|
||||
onExampleChanged(NULL, NULL);
|
||||
|
||||
uiControlShow(uiControl(mainwin));
|
||||
uiMain();
|
||||
|
||||
// TODO free examples
|
||||
|
||||
uiUninit();
|
||||
return 0;
|
||||
}
|
||||
Reference in new issue
Block a user