#include "config.h"
#include "Font.h"
#include "GlyphBuffer.h"
#include "GraphicsContext.h"
#include "IntRect.h"
#include "SimpleFontData.h"
#include "UniscribeController.h"
#include "WebCoreTextRenderer.h"
#include <ApplicationServices/ApplicationServices.h>
#include <WebKitSystemInterface/WebKitSystemInterface.h>
#include <wtf/MathExtras.h>
namespace WebCore {
const int syntheticObliqueAngle = 14;
void Font::drawGlyphs(GraphicsContext* graphicsContext, const SimpleFontData* font, const GlyphBuffer& glyphBuffer,
int from, int numGlyphs, const FloatPoint& point) const
{
if (font->m_font.useGDI()) {
Color fillColor = graphicsContext->fillColor();
if (fillColor.alpha() == 0)
return;
Vector<int, 2048> gdiAdvances;
int totalWidth = 0;
for (int i = 0; i < numGlyphs; i++) {
gdiAdvances.append(lroundf(glyphBuffer.advanceAt(from + i)));
totalWidth += gdiAdvances[i];
}
int lineGap = font->lineGap();
IntRect textRect(point.x() - lineGap, point.y() - font->ascent() - lineGap, totalWidth + 2 * lineGap, font->lineSpacing());
HDC hdc = graphicsContext->getWindowsContext(textRect);
SelectObject(hdc, font->m_font.hfont());
HDC textDrawingDC = hdc;
SetTextColor(hdc, RGB(fillColor.red(), fillColor.green(), fillColor.blue()));
SetBkMode(hdc, TRANSPARENT);
SetTextAlign(hdc, TA_LEFT | TA_BASELINE);
FloatSize translation = glyphBuffer.offsetAt(from);
if (translation.width() || translation.height()) {
XFORM xform;
xform.eM11 = 1.0;
xform.eM12 = 0;
xform.eM21 = 0;
xform.eM22 = 1.0;
xform.eDx = translation.width();
xform.eDy = translation.height();
ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY);
}
ExtTextOut(hdc, point.x(), point.y(), ETO_GLYPH_INDEX, 0, (WCHAR*)glyphBuffer.glyphs(from), numGlyphs, gdiAdvances.data());
graphicsContext->releaseWindowsContext(hdc, textRect);
return;
}
CGContextRef cgContext = graphicsContext->platformContext();
uint32_t oldFontSmoothingStyle = wkSetFontSmoothingStyle(cgContext, WebCoreShouldUseFontSmoothing());
const FontPlatformData& platformData = font->platformData();
CGContextSetFont(cgContext, platformData.cgFont());
CGAffineTransform matrix = CGAffineTransformIdentity;
matrix.b = -matrix.b;
matrix.d = -matrix.d;
if (platformData.syntheticOblique()) {
static float skew = -tanf(syntheticObliqueAngle * acosf(0) / 90.0f);
matrix = CGAffineTransformConcat(matrix, CGAffineTransformMake(1, 0, skew, 1, 0, 0));
}
FloatSize translation = glyphBuffer.offsetAt(from);
if (translation.width() || translation.height())
CGAffineTransformTranslate(matrix, translation.width(), translation.height());
CGContextSetTextMatrix(cgContext, matrix);
CGContextSetFontSize(cgContext, platformData.size());
CGContextSetTextPosition(cgContext, point.x(), point.y());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
if (font->m_syntheticBoldOffset) {
CGContextSetTextPosition(cgContext, point.x() + font->m_syntheticBoldOffset, point.y());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
}
wkRestoreFontSmoothingStyle(cgContext, oldFontSmoothingStyle);
}
}