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//
// C++ Implementation: k9glwidget
//
// Description:
//
//
// Author: Jean-Michel PETIT <[email protected]>, (C) 2006
//
// Copyright: See COPYING file that comes with this distribution
//
//
#include "k9glwidget.h"
#ifdef HAVE_OPENGL
#include <tqsize.h>
#include <tqapplication.h>
#include <tqdatetime.h>
#include <cstdlib>
#include "ac.h"
#include <X11/Xlib.h>
#if defined(Above)
#undef Above // defined in X.h, causes conflict with enum in tqslider.h
#endif
#if defined(Below)
#undef Below // defined in X.h, causes conflict with enum in tqslider.h
#endif
k9GLWidget::k9GLWidget(TQWidget *parent, const char *name):TQGLWidget(parent, name) {
XMapRaised(x11Display(),winId());
m_buffer=NULL;
m_height=0;
m_width=0;
library=new TQLibrary("GL.so.1");
glClear = (glClear_t) library->resolve( "glClear" );
glRasterPos2i= (glRasterPos2i_t)library->resolve("glRasterPos2i");
glFlush = (glFlush_t)library->resolve("glFlush");
glClearColor =(glClearColor_t)library->resolve("glClearColor");
glShadeModel =(glShadeModel_t)library->resolve("glShadeModel");
glPixelStorei =(glPixelStorei_t)library->resolve("glPixelStorei");
glViewport =(glViewport_t)library->resolve("glViewport");
glMatrixMode =(glMatrixMode_t)library->resolve("glMatrixMode");
glLoadIdentity =(glLoadIdentity_t)library->resolve("glLoadIdentity");
glOrtho =(glOrtho_t)library->resolve("glOrtho");
glPixelZoom=(glPixelZoom_t)library->resolve("glPixelZoom");
glDrawPixels=(glDrawPixels_t)library->resolve("glDrawPixels");
glDisable=(glDisable_t)library->resolve("glDisable");
glPixelTransferi=(glPixelTransferi_t)library->resolve("glPixelTransferi");
glGetString=(glGetString_t)library->resolve("glGetString");
}
k9GLWidget* k9GLWidget::createWidget(TQWidget *parent , const char *name ) {
//XInitThreads();
return new k9GLWidget(parent,name);
}
k9GLWidget::~k9GLWidget() {
if (m_buffer !=NULL)
free(m_buffer);
delete library;
}
void k9GLWidget::paintGL() {
draw();
}
void k9GLWidget::setImage(uchar *_buffer,int _width,int _height,int _len) {
if (tqApp==NULL)
return;
if (tqApp->tryLock() ) {
uchar *buffer=_buffer;
m_width=_width;
m_height=_height;
m_mutex.lock();
if (m_buffer !=NULL)
free(m_buffer);
m_buffer=buffer;
//m_stack.push(buffer);
m_mutex.unlock();
update();
if (tqApp !=NULL)
tqApp->unlock();
} else {
free(_buffer);
}
}
void k9GLWidget::draw() {
XLockDisplay(x11Display());
// uchar *buffer=NULL;
if (m_mutex.tryLock()) {
/* if (!m_stack.isEmpty())
buffer=m_stack.pop();
if (buffer !=NULL) {
if (m_buffer !=NULL)
free(m_buffer);
m_buffer=buffer;
}
*/
if (m_buffer!=NULL) {
int h=height()-2;
int w=width()-2;
GLfloat wratio=(GLfloat)w/(GLfloat)m_width;
GLfloat hratio=(GLfloat)h/(GLfloat)m_height;
GLfloat ratio= wratio < hratio ? wratio:hratio;
glClear(GL_COLOR_BUFFER_BIT);
int top = h-(int) (h -m_height*ratio) /2;
int left = (int) (w -m_width*ratio) /2;
glRasterPos2i (left,top);
glPixelZoom (ratio, -ratio);
glDrawPixels( m_width, m_height, GL_RGBA, GL_UNSIGNED_BYTE, m_buffer );
swapBuffers();
} else {
makeCurrent();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
swapBuffers();
m_mutex.unlock();
}
XUnlockDisplay(x11Display());
}
void k9GLWidget::initializeGL() {
setAutoBufferSwap(FALSE);
glClearColor (0.0, 0.0, 0.0, 0.0);
glShadeModel(GL_FLAT);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glDisable(GL_ALPHA_TEST);
glDisable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
glDisable(GL_DITHER);
glDisable(GL_FOG);
glDisable(GL_LIGHTING);
glDisable(GL_LOGIC_OP);
glDisable(GL_STENCIL_TEST);
glDisable(GL_TEXTURE_1D);
glDisable(GL_TEXTURE_2D);
glPixelTransferi(GL_MAP_COLOR, GL_FALSE);
glPixelTransferi(GL_RED_SCALE, 1);
glPixelTransferi(GL_RED_BIAS, 0);
glPixelTransferi(GL_GREEN_SCALE, 1);
glPixelTransferi(GL_GREEN_BIAS, 0);
glPixelTransferi(GL_BLUE_SCALE, 1);
glPixelTransferi(GL_BLUE_BIAS, 0);
glPixelTransferi(GL_ALPHA_SCALE, 1);
glPixelTransferi(GL_ALPHA_BIAS, 0);
/*
* Disable extensions that could slow down glDrawPixels.
*/
const GLubyte* extString = glGetString(GL_EXTENSIONS);
if (extString != NULL) {
if (strstr((char*) extString, "GL_EXT_convolution") != NULL) {
glDisable(GL_CONVOLUTION_1D_EXT);
glDisable(GL_CONVOLUTION_2D_EXT);
glDisable(GL_SEPARABLE_2D_EXT);
}
if (strstr((char*) extString, "GL_EXT_histogram") != NULL) {
glDisable(GL_HISTOGRAM_EXT);
glDisable(GL_MINMAX_EXT);
}
if (strstr((char*) extString, "GL_EXT_texture3D") != NULL) {
glDisable(GL_TEXTURE_3D_EXT);
}
}
}
void k9GLWidget::resizeGL(int w, int h) {
glViewport (0, 0, w, h);
glMatrixMode (GL_PROJECTION);
glLoadIdentity();
glOrtho(0, w,0,h,-1,1);
// glMatrixMode (GL_MODELVIEW);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
#include "k9glwidget.moc"
#endif
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