qpaintengineex_opengl2.cpp File Reference

#include "qglgradientcache_p.h"
#include "qpaintengineex_opengl2_p.h"
#include <string.h>
#include <qmath.h>
#include <private/qgl_p.h>
#include <private/qmath_p.h>
#include <private/qpaintengineex_p.h>
#include <QPaintEngine>
#include <private/qpainter_p.h>
#include <private/qfontengine_p.h>
#include <private/qpixmapdata_gl_p.h>
#include <private/qdatabuffer_p.h>
#include <private/qstatictext_p.h>
#include <private/qtriangulator_p.h>
#include "qglengineshadermanager_p.h"
#include "qgl2pexvertexarray_p.h"
#include "qtriangulatingstroker_p.h"
#include "qtextureglyphcache_gl_p.h"
#include <QDebug>

Go to the source code of this file.

Classes
struct	QGL2PEVectorPathCache

Macros
#define	QT_MAX_CACHED_GLYPH_SIZE   64

Functions
static bool	fontSmoothingApproximately (qreal target)
static bool	isPowerOfTwo (uint x)
Q_GUI_EXPORT QImage	qt_imageForBrush (int brushStyle, bool invert)
QColor	qt_premultiplyColor (QColor c, GLfloat opacity)
Q_GUI_EXPORT bool	qt_scaleForTransform (const QTransform &transform, qreal *scale)
static qreal	qt_sRGB_to_linear_RGB (qreal f)
static const QRectF	scaleRect (const QRectF &r, qreal sx, qreal sy)
static void	setCoords (GLfloat *coords, const QGLRect &rect)

Variables
bool	qt_applefontsmoothing_enabled
Q_GUI_EXPORT bool	qt_cleartype_enabled

Macro Definition Documentation

QT_MAX_CACHED_GLYPH_SIZE

#define QT_MAX_CACHED_GLYPH_SIZE   64

Definition at line 107 of file qpaintengineex_opengl2.cpp.

Referenced by QGL2PaintEngineEx::drawStaticTextItem(), and QGL2PaintEngineEx::drawTextItem().

Function Documentation

fontSmoothingApproximately()

static bool fontSmoothingApproximately ( qreal  target )

static

Definition at line 1578 of file qpaintengineex_opengl2.cpp.

Referenced by QGL2PaintEngineEx::begin(), and QGL2PaintEngineExPrivate::drawCachedGlyphs().

{
    extern Q_GUI_EXPORT qreal qt_fontsmoothing_gamma; // qapplication_win.cpp
    return (qAbs(qt_fontsmoothing_gamma - target) < 0.2);
}

isPowerOfTwo()

static bool isPowerOfTwo ( uint  x )

inlinestatic

Definition at line 93 of file qpaintengineex_opengl2.cpp.

Referenced by QGL2PaintEngineExPrivate::drawCachedGlyphs(), and QGL2PaintEngineExPrivate::updateBrushTexture().

{
    return x && !(x & (x - 1));
}

qt_imageForBrush()

Q_GUI_EXPORT QImage qt_imageForBrush	(	int	brushStyle,
		bool	invert
	)

Definition at line 167 of file qbrush.cpp.

Referenced by QGL2PaintEngineExPrivate::updateBrushTexture().

{
    return qt_brushPatternImageCache()->getImage(brushStyle, invert);
}

qt_premultiplyColor()

QColor qt_premultiplyColor ( QColor  c, GLfloat  opacity  )

inline

Definition at line 151 of file qpaintengineex_opengl2.cpp.

Referenced by QGL2PaintEngineExPrivate::drawCachedGlyphs(), QGL2PaintEngineExPrivate::drawPixmapFragments(), QGL2PaintEngineExPrivate::drawTexture(), and QGL2PaintEngineExPrivate::updateBrushUniforms().

{
    qreal alpha = c.alphaF() * opacity;
    c.setAlphaF(alpha);
    c.setRedF(c.redF() * alpha);
    c.setGreenF(c.greenF() * alpha);
    c.setBlueF(c.blueF() * alpha);
    return c;
}

qt_scaleForTransform()

Q_GUI_EXPORT bool qt_scaleForTransform	(	const QTransform &	transform,
		qreal *	scale
	)

Definition at line 2407 of file qtransform.cpp.

Referenced by QGL2PaintEngineEx::fill(), and QGL2PaintEngineEx::stroke().

{
    const QTransform::TransformationType type = transform.type();
    if (type <= QTransform::TxTranslate) {
        if (scale)
            *scale = 1;
        return true;
    } else if (type == QTransform::TxScale) {
        const qreal xScale = qAbs(transform.m11());
        const qreal yScale = qAbs(transform.m22());
        if (scale)
            *scale = qMax(xScale, yScale);
        return qFuzzyCompare(xScale, yScale);
    }

    const qreal xScale = transform.m11() * transform.m11()
                         + transform.m21() * transform.m21();
    const qreal yScale = transform.m12() * transform.m12()
                         + transform.m22() * transform.m22();
    if (scale)
        *scale = qSqrt(qMax(xScale, yScale));
    return type == QTransform::TxRotate && qFuzzyCompare(xScale, yScale);
}

qt_sRGB_to_linear_RGB()

static qreal qt_sRGB_to_linear_RGB ( qreal  f )

inlinestatic

Definition at line 1585 of file qpaintengineex_opengl2.cpp.

Referenced by QGL2PaintEngineExPrivate::drawCachedGlyphs().

{
    return f > 0.04045 ? qPow((f + 0.055) / 1.055, 2.4) : f / 12.92;
}

scaleRect()

static const QRectF scaleRect ( const QRectF &  r, qreal  sx, qreal  sy  )

static

Definition at line 1369 of file qpaintengineex_opengl2.cpp.

Referenced by QGL2PaintEngineEx::drawImage(), and QGL2PaintEngineEx::drawPixmap().

{
    return QRectF(r.x() * sx, r.y() * sy, r.width() * sx, r.height() * sy);
}

setCoords()

static void setCoords ( GLfloat *  coords, const QGLRect &  rect  )

inlinestatic

Definition at line 511 of file qpaintengineex_opengl2.cpp.

Referenced by QGL2PaintEngineExPrivate::composite(), QGL2PaintEngineExPrivate::drawTexture(), and QRect::QRect().

{
    coords[0] = rect.left;
    coords[1] = rect.top;
    coords[2] = rect.right;
    coords[3] = rect.top;
    coords[4] = rect.right;
    coords[5] = rect.bottom;
    coords[6] = rect.left;
    coords[7] = rect.bottom;
}

Variable Documentation

qt_applefontsmoothing_enabled

bool qt_applefontsmoothing_enabled

Definition at line 208 of file qapplication_mac.mm.

Referenced by QGL2PaintEngineEx::begin(), isPowerOfTwo(), and qt_mac_read_fontsmoothing_settings().

qt_cleartype_enabled

Q_GUI_EXPORT bool qt_cleartype_enabled

Definition at line 241 of file qapplication_win.cpp.

Referenced by QGL2PaintEngineEx::begin(), and isPowerOfTwo().