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gdiplus: Add helper for translating GpFont to HFONT.

This commit is contained in:
Vincent Povirk 2011-04-04 14:00:56 -05:00 committed by Alexandre Julliard
parent bf163d79b8
commit 32baa8ba4e
2 changed files with 49 additions and 46 deletions
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2
dlls/gdiplus/gdiplus_private.h
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@ -58,6 +58,8 @@ extern void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
extern void free_installed_fonts(void);
extern void get_font_hfont(GpGraphics *graphics, GDIPCONST GpFont *font, HFONT *hfont);
extern BOOL lengthen_path(GpPath *path, INT len);
extern GpStatus trace_path(GpGraphics *graphics, GpPath *path);

93
dlls/gdiplus/graphics.c
View File

@ -1654,6 +1654,45 @@ end:
return stat;
}
void get_font_hfont(GpGraphics *graphics, GDIPCONST GpFont *font, HFONT *hfont)
{
HDC hdc = CreateCompatibleDC(0);
GpPointF pt[3];
REAL angle, rel_width, rel_height;
LOGFONTW lfw;
HFONT unscaled_font;
TEXTMETRICW textmet;
pt[0].X = 0.0;
pt[0].Y = 0.0;
pt[1].X = 1.0;
pt[1].Y = 0.0;
pt[2].X = 0.0;
pt[2].Y = 1.0;
if (graphics)
GdipTransformPoints(graphics, CoordinateSpaceDevice, CoordinateSpaceWorld, pt, 3);
angle = -gdiplus_atan2((pt[1].Y - pt[0].Y), (pt[1].X - pt[0].X));
rel_width = sqrt((pt[1].Y-pt[0].Y)*(pt[1].Y-pt[0].Y)+
(pt[1].X-pt[0].X)*(pt[1].X-pt[0].X));
rel_height = sqrt((pt[2].Y-pt[0].Y)*(pt[2].Y-pt[0].Y)+
(pt[2].X-pt[0].X)*(pt[2].X-pt[0].X));
unscaled_font = CreateFontIndirectW(&font->lfw);
SelectObject(hdc, unscaled_font);
GetTextMetricsW(hdc, &textmet);
lfw = font->lfw;
lfw.lfHeight = roundr(((REAL)lfw.lfHeight) * rel_height);
lfw.lfWidth = roundr(textmet.tmAveCharWidth * rel_width);
lfw.lfEscapement = lfw.lfOrientation = roundr((angle / M_PI) * 1800.0);
*hfont = CreateFontIndirectW(&lfw);
DeleteDC(hdc);
DeleteObject(unscaled_font);
}
GpStatus WINGDIPAPI GdipCreateFromHDC(HDC hdc, GpGraphics **graphics)
{
TRACE("(%p, %p)\n", hdc, graphics);
@ -4581,8 +4620,6 @@ GpStatus WINGDIPAPI GdipDrawString(GpGraphics *graphics, GDIPCONST WCHAR *string
{
HRGN rgn = NULL;
HFONT gdifont;
LOGFONTW lfw;
TEXTMETRICW textmet;
GpPointF pt[3], rectcpy[4];
POINT corners[4];
REAL angle, rel_width, rel_height;
@ -4660,19 +4697,8 @@ GpStatus WINGDIPAPI GdipDrawString(GpGraphics *graphics, GDIPCONST WCHAR *string
SelectClipRgn(graphics->hdc, rgn);
}
/* Use gdi to find the font, then perform transformations on it (height,
* width, angle). */
SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
GetTextMetricsW(graphics->hdc, &textmet);
lfw = font->lfw;
lfw.lfHeight = roundr(((REAL)lfw.lfHeight) * rel_height);
lfw.lfWidth = roundr(textmet.tmAveCharWidth * rel_width);
lfw.lfEscapement = lfw.lfOrientation = roundr((angle / M_PI) * 1800.0);
gdifont = CreateFontIndirectW(&lfw);
DeleteObject(SelectObject(graphics->hdc, gdifont));
get_font_hfont(graphics, font, &gdifont);
SelectObject(graphics->hdc, gdifont);
if (!format || format->align == StringAlignmentNear)
{
@ -5594,11 +5620,8 @@ static GpStatus GDI32_GdipDrawDriverString(GpGraphics *graphics, GDIPCONST UINT1
{
static const INT unsupported_flags = ~(DriverStringOptionsRealizedAdvance);
INT save_state;
GpPointF pt[4];
REAL angle, rel_width, rel_height;
LOGFONTW lfw;
HFONT unscaled_font, hfont;
TEXTMETRICW textmet;
GpPointF pt;
HFONT hfont;
if (flags & unsupported_flags)
FIXME("Ignoring flags %x\n", flags & unsupported_flags);
@ -5610,37 +5633,15 @@ static GpStatus GDI32_GdipDrawDriverString(GpGraphics *graphics, GDIPCONST UINT1
SetBkMode(graphics->hdc, TRANSPARENT);
SetTextColor(graphics->hdc, brush->lb.lbColor);
pt[0].X = 0.0;
pt[0].Y = 0.0;
pt[1].X = 1.0;
pt[1].Y = 0.0;
pt[2].X = 0.0;
pt[2].Y = 1.0;
pt[3] = positions[0];
GdipTransformPoints(graphics, CoordinateSpaceDevice, CoordinateSpaceWorld, pt, 4);
angle = -gdiplus_atan2((pt[1].Y - pt[0].Y), (pt[1].X - pt[0].X));
rel_width = sqrt((pt[1].Y-pt[0].Y)*(pt[1].Y-pt[0].Y)+
(pt[1].X-pt[0].X)*(pt[1].X-pt[0].X));
rel_height = sqrt((pt[2].Y-pt[0].Y)*(pt[2].Y-pt[0].Y)+
(pt[2].X-pt[0].X)*(pt[2].X-pt[0].X));
pt = positions[0];
GdipTransformPoints(graphics, CoordinateSpaceDevice, CoordinateSpaceWorld, &pt, 1);
unscaled_font = CreateFontIndirectW(&font->lfw);
SelectObject(graphics->hdc, unscaled_font);
GetTextMetricsW(graphics->hdc, &textmet);
lfw = font->lfw;
lfw.lfHeight = roundr(((REAL)lfw.lfHeight) * rel_height);
lfw.lfWidth = roundr(textmet.tmAveCharWidth * rel_width);
lfw.lfEscapement = lfw.lfOrientation = roundr((angle / M_PI) * 1800.0);
hfont = CreateFontIndirectW(&lfw);
get_font_hfont(graphics, font, &hfont);
SelectObject(graphics->hdc, hfont);
DeleteObject(unscaled_font);
SetTextAlign(graphics->hdc, TA_BASELINE|TA_LEFT);
ExtTextOutW(graphics->hdc, roundr(pt[3].X), roundr(pt[3].Y), ETO_GLYPH_INDEX, NULL, text, length, NULL);
ExtTextOutW(graphics->hdc, roundr(pt.X), roundr(pt.Y), ETO_GLYPH_INDEX, NULL, text, length, NULL);
RestoreDC(graphics->hdc, save_state);