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// 16 may 2016
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#include "uipriv_windows.hpp"
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struct uiColorButton {
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uiWindowsControl c;
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HWND hwnd;
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double r;
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double g;
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double b;
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double a;
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void (*onChanged)(uiColorButton *, void *);
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void *onChangedData;
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};
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static void uiColorButtonDestroy(uiControl *c)
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{
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uiColorButton *b = uiColorButton(c);
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uiWindowsUnregisterWM_COMMANDHandler(b->hwnd);
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uiWindowsUnregisterWM_NOTIFYHandler(b->hwnd);
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uiWindowsEnsureDestroyWindow(b->hwnd);
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uiFreeControl(uiControl(b));
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}
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static BOOL onWM_COMMAND(uiControl *c, HWND hwnd, WORD code, LRESULT *lResult)
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{
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uiColorButton *b = uiColorButton(c);
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HWND parent;
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struct colorDialogRGBA rgba;
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if (code != BN_CLICKED)
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return FALSE;
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parent = parentToplevel(b->hwnd);
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rgba.r = b->r;
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rgba.g = b->g;
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rgba.b = b->b;
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rgba.a = b->a;
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if (showColorDialog(parent, &rgba)) {
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b->r = rgba.r;
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b->g = rgba.g;
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b->b = rgba.b;
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b->a = rgba.a;
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invalidateRect(b->hwnd, NULL, TRUE);
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(*(b->onChanged))(b, b->onChangedData);
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}
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*lResult = 0;
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return TRUE;
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}
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static BOOL onWM_NOTIFY(uiControl *c, HWND hwnd, NMHDR *nmhdr, LRESULT *lResult)
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{
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uiColorButton *b = uiColorButton(c);
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NMCUSTOMDRAW *nm = (NMCUSTOMDRAW *) nmhdr;
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RECT client;
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ID2D1DCRenderTarget *rt;
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D2D1_RECT_F r;
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D2D1_COLOR_F color;
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D2D1_BRUSH_PROPERTIES bprop;
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ID2D1SolidColorBrush *brush;
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uiWindowsSizing sizing;
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int x, y;
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HRESULT hr;
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if (nmhdr->code != NM_CUSTOMDRAW)
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return FALSE;
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// and allow the button to draw its background
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if (nm->dwDrawStage != CDDS_PREPAINT)
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return FALSE;
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uiWindowsEnsureGetClientRect(b->hwnd, &client);
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rt = makeHDCRenderTarget(nm->hdc, &client);
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rt->BeginDraw();
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uiWindowsGetSizing(b->hwnd, &sizing);
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x = 3; // should be enough
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y = 3;
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uiWindowsSizingDlgUnitsToPixels(&sizing, &x, &y);
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r.left = client.left + x;
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r.top = client.top + y;
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r.right = client.right - x;
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r.bottom = client.bottom - y;
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color.r = b->r;
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color.g = b->g;
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color.b = b->b;
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color.a = b->a;
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ZeroMemory(&bprop, sizeof (D2D1_BRUSH_PROPERTIES));
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bprop.opacity = 1.0;
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bprop.transform._11 = 1;
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bprop.transform._22 = 1;
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hr = rt->CreateSolidColorBrush(&color, &bprop, &brush);
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if (hr != S_OK)
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logHRESULT(L"error creating brush for color button", hr);
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rt->FillRectangle(&r, brush);
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brush->Release();
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hr = rt->EndDraw(NULL, NULL);
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if (hr != S_OK)
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logHRESULT(L"error drawing color on color button", hr);
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rt->Release();
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// skip default processing (don't draw text)
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*lResult = CDRF_SKIPDEFAULT;
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return TRUE;
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}
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uiWindowsControlAllDefaultsExceptDestroy(uiColorButton)
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// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
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#define buttonHeight 14
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// TODO check widths
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static void uiColorButtonMinimumSize(uiWindowsControl *c, int *width, int *height)
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{
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uiColorButton *b = uiColorButton(c);
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SIZE size;
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uiWindowsSizing sizing;
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int y;
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// try the comctl32 version 6 way
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size.cx = 0; // explicitly ask for ideal size
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size.cy = 0;
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if (SendMessageW(b->hwnd, BCM_GETIDEALSIZE, 0, (LPARAM) (&size)) != FALSE) {
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*width = size.cx;
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*height = size.cy;
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return;
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}
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// that didn't work; fall back to using Microsoft's metrics
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// Microsoft says to use a fixed width for all buttons; this isn't good enough
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// use the text width instead, with some edge padding
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*width = uiWindowsWindowTextWidth(b->hwnd) + (2 * GetSystemMetrics(SM_CXEDGE));
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y = buttonHeight;
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uiWindowsGetSizing(b->hwnd, &sizing);
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uiWindowsSizingDlgUnitsToPixels(&sizing, NULL, &y);
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*height = y;
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}
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static void defaultOnChanged(uiColorButton *b, void *data)
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{
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// do nothing
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}
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void uiColorButtonColor(uiColorButton *b, double *r, double *g, double *bl, double *a)
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{
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*r = b->r;
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*g = b->g;
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*bl = b->b;
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*a = b->a;
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}
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void uiColorButtonSetColor(uiColorButton *b, double r, double g, double bl, double a)
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{
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b->r = r;
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b->g = g;
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b->b = bl;
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b->a = a;
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invalidateRect(b->hwnd, NULL, TRUE);
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}
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void uiColorButtonOnChanged(uiColorButton *b, void (*f)(uiColorButton *, void *), void *data)
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{
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b->onChanged = f;
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b->onChangedData = data;
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}
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uiColorButton *uiNewColorButton(void)
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{
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uiColorButton *b;
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uiWindowsNewControl(uiColorButton, b);
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// initial color is black
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b->r = 0.0;
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b->g = 0.0;
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b->b = 0.0;
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b->a = 1.0;
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b->hwnd = uiWindowsEnsureCreateControlHWND(0,
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L"button", L" ", // TODO; can't use "" TODO
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BS_PUSHBUTTON | WS_TABSTOP,
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hInstance, NULL,
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TRUE);
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uiWindowsRegisterWM_COMMANDHandler(b->hwnd, onWM_COMMAND, uiControl(b));
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uiWindowsRegisterWM_NOTIFYHandler(b->hwnd, onWM_NOTIFY, uiControl(b));
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uiColorButtonOnChanged(b, defaultOnChanged, NULL);
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return b;
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}
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