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koffice/krita/ui/kis_opengl_canvas_painter.cc

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/*
* Copyright (c) 2005 Adrian Page <adrian@pagenet.plus.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.g
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_GL
#include <kdebug.h>
#include "kis_canvas.h"
#include "kis_canvas_painter.h"
#include "kis_opengl_canvas_painter.h"
KisOpenGLCanvasPainter::KisOpenGLCanvasPainter()
: m_active(false), m_widget(0)
{
}
KisOpenGLCanvasPainter::KisOpenGLCanvasPainter(QGLWidget *widget)
: m_active(true), m_widget(widget)
{
prepareForDrawing();
}
KisOpenGLCanvasPainter::~KisOpenGLCanvasPainter()
{
if (m_widget) {
if (m_active) {
end();
}
m_widget->doneCurrent();
}
}
bool KisOpenGLCanvasPainter::begin(KisCanvasWidget *canvasWidget, bool /*unclipped*/)
{
m_widget = dynamic_cast<QGLWidget *>(canvasWidget);
if (m_widget != 0) {
prepareForDrawing();
return true;
} else {
return false;
}
return false;
}
void KisOpenGLCanvasPainter::prepareForDrawing()
{
if (m_widget != 0) {
m_widget->makeCurrent();
m_active = true;
save();
glDrawBuffer(GL_FRONT);
glBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO);
glEnable(GL_BLEND);
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
m_window = QRect(0, 0, m_widget->width(), m_widget->height());
m_viewport = m_window;
updateViewTransformation();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
setPen(m_defaultPen);
}
}
void KisOpenGLCanvasPainter::updateViewTransformation()
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
// We don't set the GL viewport directly from the Qt one as the GL
// has a limited size. Instead we fold it into the projection matrix.
glViewport(0, 0, m_widget->width(), m_widget->height());
glOrtho(0, m_widget->width(), m_widget->height(), 0, -1, 1);
glTranslatef(m_viewport.x(), m_viewport.y(), 0.0);
glScalef(static_cast<float>(m_viewport.width()) / m_window.width(),
static_cast<float>(m_viewport.height()) / m_window.height(),
1.0);
glTranslatef(-m_window.x(), -m_window.y(), 0.0);
}
bool KisOpenGLCanvasPainter::end()
{
if (m_active) {
restore();
m_active = false;
return true;
} else {
return false;
}
}
void KisOpenGLCanvasPainter::save()
{
glPushAttrib(GL_ALL_ATTRIB_BITS);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glMatrixMode(GL_TEXTURE);
glPushMatrix();
}
void KisOpenGLCanvasPainter::restore()
{
glPopAttrib();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glMatrixMode(GL_TEXTURE);
glPopMatrix();
}
void KisOpenGLCanvasPainter::setPenStyle(Qt::PenStyle penStyle)
{
if (penStyle == Qt::SolidLine) {
glDisable(GL_LINE_STIPPLE);
} else {
GLushort lineStipple;
switch (penStyle) {
case Qt::NoPen:
lineStipple = 0;
break;
default:
case Qt::DashLine:
lineStipple = 0x3fff;
break;
case Qt::DotLine:
lineStipple = 0x3333;
break;
case Qt::DashDotLine:
lineStipple = 0x33ff;
break;
case Qt::DashDotDotLine:
lineStipple = 0x333f;
break;
}
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, lineStipple);
}
}
QFontMetrics KisOpenGLCanvasPainter::fontMetrics() const
{
return QFontMetrics(QFont());
}
QFontInfo KisOpenGLCanvasPainter::fontInfo() const
{
return QFontInfo(QFont());
}
const QFont& KisOpenGLCanvasPainter::font() const
{
return m_defaultFont;
}
void KisOpenGLCanvasPainter::setFont(const QFont& /*font*/)
{
}
const QPen& KisOpenGLCanvasPainter::pen() const
{
return m_defaultPen;
}
void KisOpenGLCanvasPainter::setPen(const QPen& pen)
{
setPenStyle(pen.style());
}
void KisOpenGLCanvasPainter::setPen(Qt::PenStyle penStyle)
{
setPenStyle(penStyle);
}
void KisOpenGLCanvasPainter::setPen(const QColor& /*color*/)
{
}
const QBrush& KisOpenGLCanvasPainter::brush() const
{
return m_defaultBrush;
}
void KisOpenGLCanvasPainter::setBrush(const QBrush& /*brush*/)
{
}
void KisOpenGLCanvasPainter::setBrush(Qt::BrushStyle /*brushStyle*/)
{
}
void KisOpenGLCanvasPainter::setBrush(const QColor& /*color*/)
{
}
QPoint KisOpenGLCanvasPainter::pos() const
{
return QPoint();
}
const QColor& KisOpenGLCanvasPainter::backgroundColor() const
{
return m_defaultColor;
}
void KisOpenGLCanvasPainter::setBackgroundColor(const QColor& /*color*/)
{
}
Qt::Qt::BGMode KisOpenGLCanvasPainter::backgroundMode() const
{
return Qt::TransparentMode;
}
void KisOpenGLCanvasPainter::setBackgroundMode(Qt::Qt::BGMode /*bgMode*/)
{
}
Qt::Qt::RasterOp KisOpenGLCanvasPainter::rasterOp() const
{
return Qt::CopyROP;
}
void KisOpenGLCanvasPainter::setRasterOp(Qt::RasterOp /*rasterOp*/)
{
}
const QPoint& KisOpenGLCanvasPainter::brushOrigin() const
{
return m_defaultBrushOrigin;
}
void KisOpenGLCanvasPainter::setBrushOrigin(int /*x*/, int /*y*/)
{
}
void KisOpenGLCanvasPainter::setBrushOrigin(const QPoint& /*origin*/)
{
}
bool KisOpenGLCanvasPainter::hasViewXForm() const
{
return false;
}
bool KisOpenGLCanvasPainter::hasWorldXForm() const
{
return false;
}
void KisOpenGLCanvasPainter::setViewXForm(bool /*enable*/)
{
}
QRect KisOpenGLCanvasPainter::window() const
{
return m_window;
}
void KisOpenGLCanvasPainter::setWindow(const QRect& r)
{
m_window = r;
updateViewTransformation();
}
void KisOpenGLCanvasPainter::setWindow(int x, int y, int w, int h)
{
setWindow(QRect(x, y, w, h));
}
QRect KisOpenGLCanvasPainter::viewport() const
{
return m_viewport;
}
void KisOpenGLCanvasPainter::setViewport(const QRect& r)
{
m_viewport = r;
updateViewTransformation();
}
void KisOpenGLCanvasPainter::setViewport(int x, int y, int w, int h)
{
setViewport(QRect(x, y, w, h));
}
void KisOpenGLCanvasPainter::setWorldXForm(bool /*enable*/)
{
}
const QWMatrix& KisOpenGLCanvasPainter::worldMatrix() const
{
return m_defaultWorldMatrix;
}
void KisOpenGLCanvasPainter::setWorldMatrix(const QWMatrix& /*matrix*/, bool /*combine*/)
{
}
void KisOpenGLCanvasPainter::saveWorldMatrix()
{
}
void KisOpenGLCanvasPainter::restoreWorldMatrix()
{
}
void KisOpenGLCanvasPainter::scale(double /*sx*/, double /*sy*/)
{
}
void KisOpenGLCanvasPainter::shear(double /*sh*/, double /*sv*/)
{
}
void KisOpenGLCanvasPainter::rotate(double /*a*/)
{
}
void KisOpenGLCanvasPainter::translate(double dx, double dy)
{
glMatrixMode(GL_MODELVIEW);
glTranslated(dx, dy, 0.0);
}
void KisOpenGLCanvasPainter::resetXForm()
{
}
double KisOpenGLCanvasPainter::translationX() const
{
return 0;
}
double KisOpenGLCanvasPainter::translationY() const
{
return 0;
}
QPoint KisOpenGLCanvasPainter::xForm(const QPoint& point) const
{
return point;
}
QRect KisOpenGLCanvasPainter::xForm(const QRect& r) const
{
return r;
}
QPointArray KisOpenGLCanvasPainter::xForm(const QPointArray& pointArray) const
{
return pointArray;
}
QPointArray KisOpenGLCanvasPainter::xForm(const QPointArray& pointArray, int /*index*/, int /*npoints*/) const
{
return pointArray;
}
QPoint KisOpenGLCanvasPainter::xFormDev(const QPoint& point) const
{
return point;
}
QRect KisOpenGLCanvasPainter::xFormDev(const QRect& r) const
{
return r;
}
QPointArray KisOpenGLCanvasPainter::xFormDev(const QPointArray& pointArray) const
{
return pointArray;
}
QPointArray KisOpenGLCanvasPainter::xFormDev(const QPointArray& pointArray, int /*index*/, int /*npoints*/) const
{
return pointArray;
}
void KisOpenGLCanvasPainter::setClipping(bool /*enable*/)
{
}
bool KisOpenGLCanvasPainter::hasClipping() const
{
return true;
}
QRegion KisOpenGLCanvasPainter::clipRegion(QPainter::CoordinateMode /*mode*/) const
{
return QRegion();
}
void KisOpenGLCanvasPainter::setClipRect(const QRect& /*r*/, QPainter::CoordinateMode /*mode*/)
{
}
void KisOpenGLCanvasPainter::setClipRect(int /*x*/, int /*y*/, int /*w*/, int /*h*/, QPainter::CoordinateMode /*mode*/)
{
}
void KisOpenGLCanvasPainter::setClipRegion(const QRegion& /*rgn*/, QPainter::CoordinateMode /*mode*/)
{
}
void KisOpenGLCanvasPainter::drawPoint(int x, int y)
{
glBegin(GL_POINTS);
glVertex2i(x, y);
glEnd();
}
void KisOpenGLCanvasPainter::drawPoint(const QPoint& point)
{
drawPoint(point.x(), point.y());
}
void KisOpenGLCanvasPainter::drawPoints(const QPointArray& pointArray, int index, int npoints)
{
int firstPointIndex = index;
if (firstPointIndex < 0) {
firstPointIndex = 0;
}
if (firstPointIndex > (int)pointArray.count() - 1) {
return;
}
int lastPointIndex;
if (npoints < 0) {
lastPointIndex = pointArray.count() - 1;
} else {
lastPointIndex = firstPointIndex + npoints;
if (lastPointIndex > (int)pointArray.count() - 1) {
lastPointIndex = pointArray.count() - 1;
}
}
glBegin(GL_POINTS);
for (int pointIndex = firstPointIndex; pointIndex <= lastPointIndex; pointIndex++) {
QPoint point = pointArray.point(pointIndex);
glVertex2i(point.x(), point.y());
}
glEnd();
}
void KisOpenGLCanvasPainter::moveTo(int /*x*/, int /*y*/)
{
}
void KisOpenGLCanvasPainter::moveTo(const QPoint& /*point*/)
{
}
void KisOpenGLCanvasPainter::lineTo(int /*x*/, int /*y*/)
{
}
void KisOpenGLCanvasPainter::lineTo(const QPoint& /*point*/)
{
}
void KisOpenGLCanvasPainter::drawLine(int x1, int y1, int x2, int y2)
{
glBegin(GL_LINES);
glVertex2i(x1, y1);
glVertex2i(x2, y2);
glEnd();
}
void KisOpenGLCanvasPainter::drawLine(const QPoint& start, const QPoint& end)
{
drawLine(start.x(), start.y(), end.x(), end.y());
}
void KisOpenGLCanvasPainter::drawRect(int x, int y, int w, int h)
{
glBegin(GL_LINES);
glVertex2i(x, y);
glVertex2i(x + w - 1, y);
glVertex2i(x + w - 1, y);
glVertex2i(x + w - 1, y + h - 1);
glVertex2i(x + w - 1, y + h - 1);
glVertex2i(x, y + h - 1);
glVertex2i(x, y + h - 1);
glVertex2i(x, y);
glEnd();
}
void KisOpenGLCanvasPainter::drawRect(const QRect& r)
{
drawRect(r.x(), r.y(), r.width(), r.height());
}
void KisOpenGLCanvasPainter::drawWinFocusRect(int /*x*/, int /*y*/, int /*w*/, int /*h*/)
{
}
void KisOpenGLCanvasPainter::drawWinFocusRect(int /*x*/, int /*y*/, int /*w*/, int /*h*/, const QColor& /*bgColor*/)
{
}
void KisOpenGLCanvasPainter::drawWinFocusRect(const QRect& /*r*/)
{
}
void KisOpenGLCanvasPainter::drawWinFocusRect(const QRect& /*r*/, const QColor& /*bgColor*/)
{
}
void KisOpenGLCanvasPainter::drawRoundRect(int x, int y, int w, int h, int /*xRnd*/, int /*yRnd*/)
{
glBegin(GL_LINES);
glVertex2i(x, y);
glVertex2i(x + w - 1, y);
glVertex2i(x + w - 1, y);
glVertex2i(x + w - 1, y + h - 1);
glVertex2i(x + w - 1, y + h - 1);
glVertex2i(x, y + h - 1);
glVertex2i(x, y + h - 1);
glVertex2i(x, y);
glEnd();
}
void KisOpenGLCanvasPainter::drawRoundRect(const QRect& r, int /*xRnd*/, int /*yRnd*/)
{
drawRoundRect(r.x(), r.y(), r.width(), r.height());
}
// void KisOpenGLCanvasPainter::drawRoundRect(int /*x*/, int /*y*/, int /*w*/, int /*h*/, int /*xRnd*/, int /*yRnd*/)
// {
// }
//
// void KisOpenGLCanvasPainter::drawRoundRect(const QRect& /*r*/, int /*xRnd*/, int /*yRnd*/)
// {
// }
void KisOpenGLCanvasPainter::drawEllipse(int x, int y, int w, int h)
{
QRect r(x, y, w, h);
r = r.normalize();
QPointArray points;
points.makeEllipse(r.x(), r.y(), r.width(), r.height());
drawPoints(points);
}
void KisOpenGLCanvasPainter::drawEllipse(const QRect& r)
{
drawEllipse(r.x(), r.y(), r.width(), r.height());
}
void KisOpenGLCanvasPainter::drawArc(int /*x*/, int /*y*/, int /*w*/, int /*h*/, int /*a*/, int /*alen*/)
{
}
void KisOpenGLCanvasPainter::drawArc(const QRect& /*r*/, int /*a*/, int /*alen*/)
{
}
void KisOpenGLCanvasPainter::drawPie(int /*x*/, int /*y*/, int /*w*/, int /*h*/, int /*a*/, int /*alen*/)
{
}
void KisOpenGLCanvasPainter::drawPie(const QRect& /*r*/, int /*a*/, int /*alen*/)
{
}
void KisOpenGLCanvasPainter::drawChord(int /*x*/, int /*y*/, int /*w*/, int /*h*/, int /*a*/, int /*alen*/)
{
}
void KisOpenGLCanvasPainter::drawChord(const QRect& /*r*/, int /*a*/, int /*alen*/)
{
}
void KisOpenGLCanvasPainter::drawLineSegments(const QPointArray& /*pointArray*/, int /*index*/, int /*nlines*/)
{
}
void KisOpenGLCanvasPainter::drawPolyline(const QPointArray& pointArray, int index, int npoints)
{
int firstPointIndex = index;
if (firstPointIndex < 0) {
firstPointIndex = 0;
}
if (firstPointIndex > (int)pointArray.count() - 2) {
return;
}
int lastPointIndex;
if (npoints < 0) {
lastPointIndex = pointArray.count() - 1;
} else {
lastPointIndex = firstPointIndex + npoints - 1;
if (lastPointIndex > (int)pointArray.count() - 1) {
lastPointIndex = pointArray.count() - 1;
}
}
if (firstPointIndex >= lastPointIndex) {
return;
}
glBegin(GL_LINES);
for (int pointIndex = firstPointIndex; pointIndex <= lastPointIndex; pointIndex++) {
QPoint point = pointArray.point(pointIndex);
glVertex2i(point.x(), point.y());
}
glEnd();
}
void KisOpenGLCanvasPainter::drawPolygon(const QPointArray& /*pointArray*/, bool /*winding*/, int /*index*/, int /*npoints*/)
{
}
void KisOpenGLCanvasPainter::drawConvexPolygon(const QPointArray& /*pointArray*/, int /*index*/, int /*npoints*/)
{
}
QPoint midpoint (const QPoint& P1, const QPoint& P2)
{
QPoint temp;
temp.setX((P1.x()+P2.x())/2);
temp.setY((P1.y()+P2.y())/2);
return temp;
}
#define MAX_LEVEL 5
void recursiveCurve (const QPoint& P1, const QPoint& P2, const QPoint& P3,
const QPoint& P4, int level, QValueList<QPoint>& dest)
{
if (level > MAX_LEVEL) {
dest.append(midpoint(P1,P4));
return;
}
QPoint L1, L2, L3, L4;
QPoint H, R1, R2, R3, R4;
L1 = P1;
L2 = midpoint(P1, P2);
H = midpoint(P2, P3);
R3 = midpoint(P3, P4);
R4 = P4;
L3 = midpoint(L2, H);
R2 = midpoint(R3, H);
L4 = midpoint(L3, R2);
R1 = L4;
recursiveCurve(L1, L2, L3, L4, level + 1, dest);
recursiveCurve(R1, R2, R3, R4, level + 1, dest);
}
void KisOpenGLCanvasPainter::drawCubicBezier(const QPointArray& pointArray, int index)
{
QPoint P1, P2, P3, P4;
QValueList<QPoint> dest;
P1 = pointArray[index++];
P2 = pointArray[index++];
P3 = pointArray[index++];
P4 = pointArray[index];
recursiveCurve(P1, P2, P3, P4, 1, dest);
glBegin(GL_LINE_STRIP);
glVertex2i(P1.x(), P1.y());
for (QValueList<QPoint>::iterator it = dest.begin(); it != dest.end(); it++) {
QPoint point = (*it);
glVertex2i(point.x(), point.y());
}
glVertex2i(P4.x(), P4.y());
glEnd();
}
void KisOpenGLCanvasPainter::drawPixmap(int /*x*/, int /*y*/, const QPixmap& /*pixmap*/, int /*sx*/, int /*sy*/, int /*sw*/, int /*sh*/)
{
}
void KisOpenGLCanvasPainter::drawPixmap(const QPoint& /*point*/, const QPixmap& /*pixmap*/, const QRect& /*sr*/)
{
}
void KisOpenGLCanvasPainter::drawPixmap(const QPoint& /*point*/, const QPixmap& /*pixmap*/)
{
}
void KisOpenGLCanvasPainter::drawPixmap(const QRect& /*r*/, const QPixmap& /*pixmap*/)
{
}
void KisOpenGLCanvasPainter::drawImage(int /*x*/, int /*y*/, const QImage& /*image*/, int /*sx*/, int /*sy*/, int /*sw*/, int /*sh*/, int /*conversionFlags*/)
{
}
void KisOpenGLCanvasPainter::drawImage(const QPoint& /*point*/, const QImage& /*image*/, const QRect& /*sr*/, int /*conversionFlags*/)
{
}
void KisOpenGLCanvasPainter::drawImage(const QPoint& /*point*/, const QImage& /*image*/, int /*conversion_flags*/)
{
}
void KisOpenGLCanvasPainter::drawImage(const QRect& /*r*/, const QImage& /*image*/)
{
}
void KisOpenGLCanvasPainter::drawTiledPixmap(int /*x*/, int /*y*/, int /*w*/, int /*h*/, const QPixmap& /*pixmap*/, int /*sx*/, int /*sy*/)
{
}
void KisOpenGLCanvasPainter::drawTiledPixmap(const QRect& /*r*/, const QPixmap& /*pixmap*/, const QPoint& /*point*/)
{
}
void KisOpenGLCanvasPainter::drawTiledPixmap(const QRect& /*r*/, const QPixmap& /*pixmap*/)
{
}
void KisOpenGLCanvasPainter::fillRect(int x, int y, int w, int h, const QBrush& /*brush*/)
{
// XXX: Set brush
glRecti(x, y, x + w, y + h);
}
void KisOpenGLCanvasPainter::fillRect(const QRect& r, const QBrush& brush)
{
fillRect(r.x(), r.y(), r.width(), r.height(), brush);
}
void KisOpenGLCanvasPainter::eraseRect(int /*x*/, int /*y*/, int /*w*/, int /*h*/)
{
}
void KisOpenGLCanvasPainter::eraseRect(const QRect& /*r*/)
{
}
void KisOpenGLCanvasPainter::drawText(int /*x*/, int /*y*/, const QString& /*text*/, int /*len*/, QPainter::TextDirection /*dir*/)
{
}
void KisOpenGLCanvasPainter::drawText(const QPoint& /*point*/, const QString& /*text*/, int /*len*/, QPainter::TextDirection /*dir*/)
{
}
void KisOpenGLCanvasPainter::drawText(int /*x*/, int /*y*/, const QString& /*text*/, int /*pos*/, int /*len*/, QPainter::TextDirection /*dir*/)
{
}
void KisOpenGLCanvasPainter::drawText(const QPoint& /*point*/, const QString& /*text*/, int /*pos*/, int /*len*/, QPainter::TextDirection /*dir*/)
{
}
void KisOpenGLCanvasPainter::drawText(int /*x*/, int /*y*/, int /*w*/, int /*h*/, int /*flags*/, const QString& /*text*/, int /*len*/, QRect */*br*/, QTextParag **/*intern*/)
{
}
void KisOpenGLCanvasPainter::drawText(const QRect& /*r*/, int /*flags*/, const QString& /*text*/, int /*len*/, QRect */*br*/, QTextParag **/*intern*/)
{
}
void KisOpenGLCanvasPainter::drawTextItem(int /*x*/, int /*y*/, const QTextItem& /*ti*/, int /*textflags*/)
{
}
void KisOpenGLCanvasPainter::drawTextItem(const QPoint& /*p*/, const QTextItem& /*ti*/, int /*textflags*/)
{
}
QRect KisOpenGLCanvasPainter::boundingRect(int /*x*/, int /*y*/, int /*w*/, int /*h*/, int /*flags*/, const QString& /*text*/, int /*len*/, QTextParag **/*intern*/)
{
return QRect();
}
QRect KisOpenGLCanvasPainter::boundingRect(const QRect& /*r*/, int /*flags*/, const QString& /*text*/, int /*len*/, QTextParag **/*intern*/)
{
return QRect();
}
int KisOpenGLCanvasPainter::tabStops() const
{
return 0;
}
void KisOpenGLCanvasPainter::setTabStops(int /*ts*/)
{
}
int *KisOpenGLCanvasPainter::tabArray() const
{
return 0;
}
void KisOpenGLCanvasPainter::setTabArray(int */*ts*/)
{
}
#endif // HAVE_GL