gdiplus: Rewrite GdipDrawString to share code with GdipMeasureString.
This commit is contained in:
Vincent Povirk
Alexandre Julliard
parent
3cee74c61d
commit
2cde94a89e
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@ -2488,208 +2488,6 @@ GpStatus WINGDIPAPI GdipDrawRectanglesI(GpGraphics *graphics, GpPen *pen,
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return ret;
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}
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GpStatus WINGDIPAPI GdipDrawString(GpGraphics *graphics, GDIPCONST WCHAR *string,
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INT length, GDIPCONST GpFont *font, GDIPCONST RectF *rect,
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GDIPCONST GpStringFormat *format, GDIPCONST GpBrush *brush)
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{
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HRGN rgn = NULL;
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HFONT gdifont;
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LOGFONTW lfw;
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TEXTMETRICW textmet;
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GpPointF pt[3], rectcpy[4];
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POINT corners[4];
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WCHAR* stringdup;
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REAL angle, ang_cos, ang_sin, rel_width, rel_height;
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INT sum = 0, height = 0, offsety = 0, fit, fitcpy, save_state, i, j, lret, nwidth,
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nheight, lineend;
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SIZE size;
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POINT drawbase;
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UINT drawflags;
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RECT drawcoord;
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TRACE("(%p, %s, %i, %p, %s, %p, %p)\n", graphics, debugstr_wn(string, length),
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length, font, debugstr_rectf(rect), format, brush);
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if(!graphics || !string || !font || !brush || !rect)
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return InvalidParameter;
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if((brush->bt != BrushTypeSolidColor)){
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FIXME("not implemented for given parameters\n");
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return NotImplemented;
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}
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if(format){
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TRACE("may be ignoring some format flags: attr %x\n", format->attr);
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/* Should be no need to explicitly test for StringAlignmentNear as
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* that is default behavior if no alignment is passed. */
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if(format->vertalign != StringAlignmentNear){
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RectF bounds;
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GdipMeasureString(graphics, string, length, font, rect, format, &bounds, 0, 0);
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if(format->vertalign == StringAlignmentCenter)
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offsety = (rect->Height - bounds.Height) / 2;
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else if(format->vertalign == StringAlignmentFar)
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offsety = (rect->Height - bounds.Height);
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}
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}
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if(length == -1) length = lstrlenW(string);
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stringdup = GdipAlloc(length * sizeof(WCHAR));
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if(!stringdup) return OutOfMemory;
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save_state = SaveDC(graphics->hdc);
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SetBkMode(graphics->hdc, TRANSPARENT);
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SetTextColor(graphics->hdc, brush->lb.lbColor);
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pt[0].X = 0.0;
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pt[0].Y = 0.0;
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pt[1].X = 1.0;
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pt[1].Y = 0.0;
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pt[2].X = 0.0;
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pt[2].Y = 1.0;
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GdipTransformPoints(graphics, CoordinateSpaceDevice, CoordinateSpaceWorld, pt, 3);
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angle = -gdiplus_atan2((pt[1].Y - pt[0].Y), (pt[1].X - pt[0].X));
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ang_cos = cos(angle);
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ang_sin = sin(angle);
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rel_width = sqrt((pt[1].Y-pt[0].Y)*(pt[1].Y-pt[0].Y)+
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(pt[1].X-pt[0].X)*(pt[1].X-pt[0].X));
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rel_height = sqrt((pt[2].Y-pt[0].Y)*(pt[2].Y-pt[0].Y)+
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(pt[2].X-pt[0].X)*(pt[2].X-pt[0].X));
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rectcpy[3].X = rectcpy[0].X = rect->X;
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rectcpy[1].Y = rectcpy[0].Y = rect->Y + offsety;
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rectcpy[2].X = rectcpy[1].X = rect->X + rect->Width;
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rectcpy[3].Y = rectcpy[2].Y = rect->Y + offsety + rect->Height;
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transform_and_round_points(graphics, corners, rectcpy, 4);
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if (roundr(rect->Width) == 0)
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nwidth = INT_MAX;
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else
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nwidth = roundr(rel_width * rect->Width);
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if (roundr(rect->Height) == 0)
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nheight = INT_MAX;
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else
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nheight = roundr(rel_height * rect->Height);
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if (roundr(rect->Width) != 0 && roundr(rect->Height) != 0)
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{
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/* FIXME: If only the width or only the height is 0, we should probably still clip */
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rgn = CreatePolygonRgn(corners, 4, ALTERNATE);
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SelectClipRgn(graphics->hdc, rgn);
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}
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/* Use gdi to find the font, then perform transformations on it (height,
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* width, angle). */
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SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
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GetTextMetricsW(graphics->hdc, &textmet);
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lfw = font->lfw;
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lfw.lfHeight = roundr(((REAL)lfw.lfHeight) * rel_height);
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lfw.lfWidth = roundr(textmet.tmAveCharWidth * rel_width);
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lfw.lfEscapement = lfw.lfOrientation = roundr((angle / M_PI) * 1800.0);
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gdifont = CreateFontIndirectW(&lfw);
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DeleteObject(SelectObject(graphics->hdc, CreateFontIndirectW(&lfw)));
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for(i = 0, j = 0; i < length; i++){
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if(!isprintW(string[i]) && (string[i] != '\n'))
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continue;
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stringdup[j] = string[i];
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j++;
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}
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length = j;
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if (!format || format->align == StringAlignmentNear)
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{
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drawbase.x = corners[0].x;
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drawbase.y = corners[0].y;
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drawflags = DT_NOCLIP | DT_EXPANDTABS;
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}
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else if (format->align == StringAlignmentCenter)
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{
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drawbase.x = (corners[0].x + corners[1].x)/2;
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drawbase.y = (corners[0].y + corners[1].y)/2;
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drawflags = DT_NOCLIP | DT_EXPANDTABS | DT_CENTER;
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}
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else /* (format->align == StringAlignmentFar) */
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{
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drawbase.x = corners[1].x;
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drawbase.y = corners[1].y;
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drawflags = DT_NOCLIP | DT_EXPANDTABS | DT_RIGHT;
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}
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while(sum < length){
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drawcoord.left = drawcoord.right = drawbase.x + roundr(ang_sin * (REAL) height);
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drawcoord.top = drawcoord.bottom = drawbase.y + roundr(ang_cos * (REAL) height);
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GetTextExtentExPointW(graphics->hdc, stringdup + sum, length - sum,
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nwidth, &fit, NULL, &size);
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fitcpy = fit;
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if(fit == 0){
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DrawTextW(graphics->hdc, stringdup + sum, 1, &drawcoord, drawflags);
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break;
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}
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for(lret = 0; lret < fit; lret++)
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if(*(stringdup + sum + lret) == '\n')
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break;
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/* Line break code (may look strange, but it imitates windows). */
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if(lret < fit)
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lineend = fit = lret; /* this is not an off-by-one error */
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else if(fit < (length - sum)){
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if(*(stringdup + sum + fit) == ' ')
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while(*(stringdup + sum + fit) == ' ')
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fit++;
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else
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while(*(stringdup + sum + fit - 1) != ' '){
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fit--;
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if(*(stringdup + sum + fit) == '\t')
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break;
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if(fit == 0){
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fit = fitcpy;
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break;
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}
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}
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lineend = fit;
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while(*(stringdup + sum + lineend - 1) == ' ' ||
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*(stringdup + sum + lineend - 1) == '\t')
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lineend--;
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}
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else
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lineend = fit;
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DrawTextW(graphics->hdc, stringdup + sum, min(length - sum, lineend),
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&drawcoord, drawflags);
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sum += fit + (lret < fitcpy ? 1 : 0);
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height += size.cy;
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if(height > nheight)
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break;
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/* Stop if this was a linewrap (but not if it was a linebreak). */
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if((lret == fitcpy) && format && (format->attr & StringFormatFlagsNoWrap))
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break;
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}
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GdipFree(stringdup);
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DeleteObject(rgn);
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DeleteObject(gdifont);
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RestoreDC(graphics->hdc, save_state);
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return Ok;
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}
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GpStatus WINGDIPAPI GdipFillClosedCurve2(GpGraphics *graphics, GpBrush *brush,
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GDIPCONST GpPointF *points, INT count, REAL tension, GpFillMode fill)
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{
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@ -3767,6 +3565,151 @@ GpStatus WINGDIPAPI GdipMeasureString(GpGraphics *graphics,
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return Ok;
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}
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struct draw_string_args {
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POINT drawbase;
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UINT drawflags;
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REAL ang_cos, ang_sin;
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};
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static GpStatus draw_string_callback(GpGraphics *graphics,
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GDIPCONST WCHAR *string, INT index, INT length, GDIPCONST GpFont *font,
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GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
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INT lineno, const RectF *bounds, void *user_data)
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{
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struct draw_string_args *args = user_data;
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RECT drawcoord;
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drawcoord.left = drawcoord.right = args->drawbase.x + roundr(args->ang_sin * bounds->Y);
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drawcoord.top = drawcoord.bottom = args->drawbase.y + roundr(args->ang_cos * bounds->Y);
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DrawTextW(graphics->hdc, string + index, length, &drawcoord, args->drawflags);
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return Ok;
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}
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GpStatus WINGDIPAPI GdipDrawString(GpGraphics *graphics, GDIPCONST WCHAR *string,
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INT length, GDIPCONST GpFont *font, GDIPCONST RectF *rect,
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GDIPCONST GpStringFormat *format, GDIPCONST GpBrush *brush)
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{
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HRGN rgn = NULL;
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HFONT gdifont;
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LOGFONTW lfw;
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TEXTMETRICW textmet;
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GpPointF pt[3], rectcpy[4];
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POINT corners[4];
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REAL angle, rel_width, rel_height;
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INT offsety = 0, save_state;
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struct draw_string_args args;
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RectF scaled_rect;
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TRACE("(%p, %s, %i, %p, %s, %p, %p)\n", graphics, debugstr_wn(string, length),
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length, font, debugstr_rectf(rect), format, brush);
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if(!graphics || !string || !font || !brush || !rect)
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return InvalidParameter;
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if((brush->bt != BrushTypeSolidColor)){
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FIXME("not implemented for given parameters\n");
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return NotImplemented;
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}
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if(format){
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TRACE("may be ignoring some format flags: attr %x\n", format->attr);
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/* Should be no need to explicitly test for StringAlignmentNear as
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* that is default behavior if no alignment is passed. */
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if(format->vertalign != StringAlignmentNear){
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RectF bounds;
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GdipMeasureString(graphics, string, length, font, rect, format, &bounds, 0, 0);
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if(format->vertalign == StringAlignmentCenter)
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offsety = (rect->Height - bounds.Height) / 2;
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else if(format->vertalign == StringAlignmentFar)
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offsety = (rect->Height - bounds.Height);
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}
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}
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save_state = SaveDC(graphics->hdc);
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SetBkMode(graphics->hdc, TRANSPARENT);
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SetTextColor(graphics->hdc, brush->lb.lbColor);
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pt[0].X = 0.0;
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pt[0].Y = 0.0;
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pt[1].X = 1.0;
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pt[1].Y = 0.0;
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pt[2].X = 0.0;
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pt[2].Y = 1.0;
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GdipTransformPoints(graphics, CoordinateSpaceDevice, CoordinateSpaceWorld, pt, 3);
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angle = -gdiplus_atan2((pt[1].Y - pt[0].Y), (pt[1].X - pt[0].X));
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args.ang_cos = cos(angle);
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args.ang_sin = sin(angle);
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rel_width = sqrt((pt[1].Y-pt[0].Y)*(pt[1].Y-pt[0].Y)+
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(pt[1].X-pt[0].X)*(pt[1].X-pt[0].X));
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rel_height = sqrt((pt[2].Y-pt[0].Y)*(pt[2].Y-pt[0].Y)+
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(pt[2].X-pt[0].X)*(pt[2].X-pt[0].X));
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rectcpy[3].X = rectcpy[0].X = rect->X;
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rectcpy[1].Y = rectcpy[0].Y = rect->Y + offsety;
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rectcpy[2].X = rectcpy[1].X = rect->X + rect->Width;
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rectcpy[3].Y = rectcpy[2].Y = rect->Y + offsety + rect->Height;
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transform_and_round_points(graphics, corners, rectcpy, 4);
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scaled_rect.X = 0.0;
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scaled_rect.Y = 0.0;
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scaled_rect.Width = rel_width * rect->Width;
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scaled_rect.Height = rel_height * rect->Height;
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if (roundr(scaled_rect.Width) != 0 && roundr(scaled_rect.Height) != 0)
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{
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/* FIXME: If only the width or only the height is 0, we should probably still clip */
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rgn = CreatePolygonRgn(corners, 4, ALTERNATE);
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SelectClipRgn(graphics->hdc, rgn);
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}
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/* Use gdi to find the font, then perform transformations on it (height,
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* width, angle). */
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SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
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GetTextMetricsW(graphics->hdc, &textmet);
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lfw = font->lfw;
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lfw.lfHeight = roundr(((REAL)lfw.lfHeight) * rel_height);
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lfw.lfWidth = roundr(textmet.tmAveCharWidth * rel_width);
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lfw.lfEscapement = lfw.lfOrientation = roundr((angle / M_PI) * 1800.0);
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gdifont = CreateFontIndirectW(&lfw);
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DeleteObject(SelectObject(graphics->hdc, CreateFontIndirectW(&lfw)));
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if (!format || format->align == StringAlignmentNear)
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{
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args.drawbase.x = corners[0].x;
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args.drawbase.y = corners[0].y;
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args.drawflags = DT_NOCLIP | DT_EXPANDTABS;
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}
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else if (format->align == StringAlignmentCenter)
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{
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args.drawbase.x = (corners[0].x + corners[1].x)/2;
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args.drawbase.y = (corners[0].y + corners[1].y)/2;
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args.drawflags = DT_NOCLIP | DT_EXPANDTABS | DT_CENTER;
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}
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else /* (format->align == StringAlignmentFar) */
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{
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args.drawbase.x = corners[1].x;
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args.drawbase.y = corners[1].y;
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args.drawflags = DT_NOCLIP | DT_EXPANDTABS | DT_RIGHT;
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}
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gdip_format_string(graphics, string, length, font, &scaled_rect, format,
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draw_string_callback, &args);
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DeleteObject(rgn);
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DeleteObject(gdifont);
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RestoreDC(graphics->hdc, save_state);
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return Ok;
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}
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GpStatus WINGDIPAPI GdipResetClip(GpGraphics *graphics)
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{
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TRACE("(%p)\n", graphics);
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