src/gui/painting/qpaintengine.cpp File Reference

#include "qpaintengine.h"
#include "qpaintengine_p.h"
#include "qpainter_p.h"
#include "qpolygon.h"
#include "qbitmap.h"
#include "qapplication.h"
#include <qdebug.h>
#include <private/qtextengine_p.h>
#include <qvarlengtharray.h>
#include <math.h>
#include <private/qfontengine_p.h>

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Classes
struct	QT_Point
struct	QT_PointF
Functions
void	qt_fill_tile (QPixmap *tile, const QPixmap &pixmap)
void	qt_draw_tile (QPaintEngine *gc, qreal x, qreal y, qreal w, qreal h, const QPixmap &pixmap, qreal xOffset, qreal yOffset)
Variables
static int	qt_polygon_recursion

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Function Documentation

void qt_draw_tile	(	QPaintEngine *	gc,
		qreal	x,
		qreal	y,
		qreal	w,
		qreal	h,
		const QPixmap &	pixmap,
		qreal	xOffset,
		qreal	yOffset
	)

Definition at line 436 of file qpaintengine.cpp.

References QPaintEngine::drawPixmap(), QPixmap::height(), and QPixmap::width().

Referenced by QPaintEngine::drawTiledPixmap(), and QX11PaintEngine::drawTiledPixmap().

{
    qreal yPos, xPos, drawH, drawW, yOff, xOff;
    yPos = y;
    yOff = yOffset;
    while(yPos < y + h) {
        drawH = pixmap.height() - yOff;    // Cropping first row
        if (yPos + drawH > y + h)           // Cropping last row
            drawH = y + h - yPos;
        xPos = x;
        xOff = xOffset;
        while(xPos < x + w) {
            drawW = pixmap.width() - xOff; // Cropping first column
            if (xPos + drawW > x + w)           // Cropping last column
                drawW = x + w - xPos;
            if (drawW > 0 && drawH > 0)
                gc->drawPixmap(QRectF(xPos, yPos, drawW, drawH), pixmap, QRectF(xOff, yOff, drawW, drawH));
            xPos += drawW;
            xOff = 0;
        }
        yPos += drawH;
        yOff = 0;
    }
}

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void qt_fill_tile	(	QPixmap *	tile,
		const QPixmap &	pixmap
	)

Definition at line 420 of file qpaintengine.cpp.

References QPixmap::height(), height, p, QPixmap::width(), width, x, and y.

Referenced by QPaintEngine::drawTiledPixmap().

{
    QPainter p(tile);
    p.drawPixmap(0, 0, pixmap);
    int x = pixmap.width();
    while (x < tile->width()) {
        p.drawPixmap(x, 0, *tile, 0, 0, x, pixmap.height());
        x *= 2;
    }
    int y = pixmap.height();
    while (y < tile->height()) {
        p.drawPixmap(0, y, *tile, 0, 0, tile->width(), y);
        y *= 2;
    }
}

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Variable Documentation

int qt_polygon_recursion [static]

Definition at line 226 of file qpaintengine.cpp.

Referenced by QPaintEngine::drawPolygon().

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