First Commit

libui-ng/test/page7c.c

@@ -0,0 +1,133 @@
+// 13 october 2015
+#include "test.h"
+
+static uiArea *area;
+
+struct handler {
+	uiAreaHandler ah;
+};
+
+static struct handler handler;
+
+#define areaSize 250
+#define borderThickness 1
+#define padding 30
+#define circleRadius ((areaSize - padding) / 2)
+
+static void handlerDraw(uiAreaHandler *a, uiArea *area, uiAreaDrawParams *dp)
+{
+	uiDrawPath *path;
+	uiDrawBrush brush;
+	uiDrawStrokeParams sp;
+	uiDrawBrushGradientStop stops[2];
+
+	memset(&brush, 0, sizeof (uiDrawBrush));
+	memset(&sp, 0, sizeof (uiDrawStrokeParams));
+
+	// add some buffering to detect scrolls that aren't on the dot and draws that are outside the scroll area on Windows
+	path = uiDrawNewPath(uiDrawFillModeWinding);
+	uiDrawPathAddRectangle(path,
+		-50, -50,
+		areaSize + 100, areaSize + 100);
+	uiDrawPathEnd(path);
+	brush.Type = uiDrawBrushTypeSolid;
+	brush.R = 0;
+	brush.G = 1;
+	brush.B = 0;
+	brush.A = 1;
+	uiDrawFill(dp->Context, path, &brush);
+	uiDrawFreePath(path);
+
+	path = uiDrawNewPath(uiDrawFillModeWinding);
+	uiDrawPathAddRectangle(path,
+		0, 0,
+		areaSize, areaSize);
+	uiDrawPathEnd(path);
+	brush.Type = uiDrawBrushTypeSolid;
+	brush.R = 1;
+	brush.G = 1;
+	brush.B = 1;
+	brush.A = 1;
+	uiDrawFill(dp->Context, path, &brush);
+	brush.Type = uiDrawBrushTypeSolid;
+	brush.R = 1;
+	brush.G = 0;
+	brush.B = 0;
+	brush.A = 1;
+	sp.Cap = uiDrawLineCapFlat;
+	sp.Join = uiDrawLineJoinMiter;
+	sp.Thickness = 1;
+	sp.MiterLimit = uiDrawDefaultMiterLimit;
+	uiDrawStroke(dp->Context, path, &brush, &sp);
+	uiDrawFreePath(path);
+
+	path = uiDrawNewPath(uiDrawFillModeWinding);
+	uiDrawPathNewFigureWithArc(path,
+		areaSize / 2, areaSize / 2,
+		circleRadius,
+		0, 2 * uiPi,
+		0);
+	uiDrawPathEnd(path);
+	stops[0].Pos =0.0;
+	stops[0].R = 0.0;
+	stops[0].G = 1.0;
+	stops[0].B = 1.0;
+	stops[0].A = 1.0;
+	stops[1].Pos = 1.0;
+	stops[1].R = 0.0;
+	stops[1].G = 0.0;
+	stops[1].B = 1.0;
+	stops[1].A = 1.0;
+	brush.Type = uiDrawBrushTypeLinearGradient;
+	brush.X0 = areaSize / 2;
+	brush.Y0 = padding;
+	brush.X1 = areaSize / 2;
+	brush.Y1 = areaSize - padding;
+	brush.Stops = stops;
+	brush.NumStops = 2;
+	uiDrawFill(dp->Context, path, &brush);
+	uiDrawFreePath(path);
+}
+
+static void handlerMouseEvent(uiAreaHandler *a, uiArea *area, uiAreaMouseEvent *e)
+{
+	// do nothing
+}
+
+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 (e->Key == 'h' && !e->Up) {
+		// TODO hide the widget momentarily on the h key
+		return 1;
+	}
+	return 0;
+}
+
+uiGroup *makePage7c(void)
+{
+	uiGroup *group;
+
+	handler.ah.Draw = handlerDraw;
+	handler.ah.MouseEvent = handlerMouseEvent;
+	handler.ah.MouseCrossed = handlerMouseCrossed;
+	handler.ah.DragBroken = handlerDragBroken;
+	handler.ah.KeyEvent = handlerKeyEvent;
+
+	group = newGroup("Scrolling Drawing Test");
+
+	area = uiNewScrollingArea((uiAreaHandler *) (&handler),
+		areaSize, areaSize);
+	uiGroupSetChild(group, uiControl(area));
+
+	return group;
+}