From: David Kahurani k.kahurani@gmail.com
This should reduce the load on GDI when an application is trying to draw to regions outside of selected DC's region
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=41617 Signed-off-by: David Kahurani k.kahurani@gmail.com --- dlls/gdiplus/graphics.c | 181 +++++++++++++++++++++++++++++----------- 1 file changed, 134 insertions(+), 47 deletions(-)
diff --git a/dlls/gdiplus/graphics.c b/dlls/gdiplus/graphics.c index 6dc34707bbf..8b5ea869652 100644 --- a/dlls/gdiplus/graphics.c +++ b/dlls/gdiplus/graphics.c @@ -1920,6 +1920,139 @@ static void shorten_bezier_amt(GpPointF * pt, REAL amt, BOOL rev) } }
+static GpStatus get_graphics_device_bounds(GpGraphics* graphics, GpRectF* rect) +{ + RECT wnd_rect; + GpStatus stat=Ok; + GpUnit unit; + + if(graphics->hwnd) { + if(!GetClientRect(graphics->hwnd, &wnd_rect)) + return GenericError; + + rect->X = wnd_rect.left; + rect->Y = wnd_rect.top; + rect->Width = wnd_rect.right - wnd_rect.left; + rect->Height = wnd_rect.bottom - wnd_rect.top; + }else if (graphics->image){ + stat = GdipGetImageBounds(graphics->image, rect, &unit); + if (stat == Ok && unit != UnitPixel) + FIXME("need to convert from unit %i\n", unit); + }else if (GetObjectType(graphics->hdc) == OBJ_MEMDC){ + HBITMAP hbmp; + BITMAP bmp; + + rect->X = 0; + rect->Y = 0; + + hbmp = GetCurrentObject(graphics->hdc, OBJ_BITMAP); + if (hbmp && GetObjectW(hbmp, sizeof(bmp), &bmp)) + { + rect->Width = bmp.bmWidth; + rect->Height = bmp.bmHeight; + } + else + { + /* FIXME: ??? */ + rect->Width = 1; + rect->Height = 1; + } + }else{ + rect->X = 0; + rect->Y = 0; + rect->Width = GetDeviceCaps(graphics->hdc, HORZRES); + rect->Height = GetDeviceCaps(graphics->hdc, VERTRES); + } + + return stat; +} + +static void poly_clip(GpGraphics *graphics, POINT *pti, BYTE *tp, int count) +{ + RectF rect; + BYTE *tpcopy = heap_alloc_zero(count); + + memcpy(tpcopy, tp, count); + get_graphics_device_bounds(graphics, &rect); + + /* Ignore data that is not meant for drawing */ + if (rect.Width == 1 && rect.Height == 1) + return; + + for (int i = 0; i < count; i++) + { + switch(tp[i] &~ PT_CLOSEFIGURE) + { + case PT_BEZIERTO: + { + int j; + + for (j = 0; j < 3; j++) + { + REAL x = pti[i + j].x; + REAL y = pti[i + j].y; + + /* At least part of the rectangle encompassing the bezier lies within the DC's region */ + if (rect.X <= x && rect.Y <= y && x <= rect.X + rect.Width && y <= rect.Y + rect.Height) + break; + } + + if (j == 3) + { + for(j = 0; j < 3; j++) + tp[i + j] = PT_MOVETO; + } + + i += 2; + break; + } + case PT_LINETO: + { + GpPath *path; + GpPen *pen; + GpRegion *line_region; + BOOL empty; + + GdipCreatePath(FillModeAlternate, &path); + + if (i == 0) + GdipAddPathLine(path, 0, 0, pti[i].x, pti[i].y); + else + GdipAddPathLine(path, pti[i - 1].x, pti[i - 1].y, pti[i].x, pti[i].y); + + GdipCreatePen1(0xffffffff, 10.0, UnitPixel, &pen); + GdipWidenPath(path, pen, NULL, FlatnessDefault); + GdipCreateRegionPath(path, &line_region); + GdipCombineRegionRect(line_region, &rect, CombineModeIntersect); + GdipIsEmptyRegion(line_region, graphics, &empty); + + if (!empty) + { + if (i != 0) + { + tp[i - 1] = tpcopy[i - 1]; + tp[i] = tpcopy[i]; + } + } + else + tp[i] = PT_MOVETO; + + GdipDeleteRegion(line_region); + GdipDeletePen(pen); + GdipDeletePath(path); + break; + } + case PT_MOVETO: + break; + + default: + ERR("Bad point type \n"); + } + } + + free(tpcopy); +} + /* Draws a combination of bezier curves and lines between points. */ static GpStatus draw_poly(GpGraphics *graphics, GpPen *pen, GDIPCONST GpPointF * pt, GDIPCONST BYTE * types, INT count, BOOL caps) @@ -2036,6 +2169,7 @@ static GpStatus draw_poly(GpGraphics *graphics, GpPen *pen, GDIPCONST GpPointF * tp[i] = convert_path_point_type(types[i]); }
+ poly_clip(graphics, pti, tp, count); PolyDraw(graphics->hdc, pti, tp, count);
status = Ok; @@ -2153,53 +2287,6 @@ static GpStatus restore_container(GpGraphics* graphics, return Ok; }
-static GpStatus get_graphics_device_bounds(GpGraphics* graphics, GpRectF* rect) -{ - RECT wnd_rect; - GpStatus stat=Ok; - GpUnit unit; - - if(graphics->hwnd) { - if(!GetClientRect(graphics->hwnd, &wnd_rect)) - return GenericError; - - rect->X = wnd_rect.left; - rect->Y = wnd_rect.top; - rect->Width = wnd_rect.right - wnd_rect.left; - rect->Height = wnd_rect.bottom - wnd_rect.top; - }else if (graphics->image){ - stat = GdipGetImageBounds(graphics->image, rect, &unit); - if (stat == Ok && unit != UnitPixel) - FIXME("need to convert from unit %i\n", unit); - }else if (GetObjectType(graphics->hdc) == OBJ_MEMDC){ - HBITMAP hbmp; - BITMAP bmp; - - rect->X = 0; - rect->Y = 0; - - hbmp = GetCurrentObject(graphics->hdc, OBJ_BITMAP); - if (hbmp && GetObjectW(hbmp, sizeof(bmp), &bmp)) - { - rect->Width = bmp.bmWidth; - rect->Height = bmp.bmHeight; - } - else - { - /* FIXME: ??? */ - rect->Width = 1; - rect->Height = 1; - } - }else{ - rect->X = 0; - rect->Y = 0; - rect->Width = GetDeviceCaps(graphics->hdc, HORZRES); - rect->Height = GetDeviceCaps(graphics->hdc, VERTRES); - } - - return stat; -} - static GpStatus get_graphics_bounds(GpGraphics* graphics, GpRectF* rect) { GpStatus stat = get_graphics_device_bounds(graphics, rect);