diff options
Diffstat (limited to 'src/k9glwidget.cpp')
| -rw-r--r-- | src/k9glwidget.cpp | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/src/k9glwidget.cpp b/src/k9glwidget.cpp new file mode 100644 index 0000000..444d823 --- /dev/null +++ b/src/k9glwidget.cpp @@ -0,0 +1,185 @@ +// +// C++ Implementation: k9glwidget +// +// Description: +// +// +// Author: Jean-Michel PETIT <k9copy@free.fr>, (C) 2006 +// +// Copyright: See COPYING file that comes with this distribution +// +// + +#include "k9glwidget.h" + +#ifdef HAVE_OPENGL +#include <qsize.h> +#include <qapplication.h> +#include <qdatetime.h> +#include <cstdlib> +#include "ac.h" +#include <X11/Xlib.h> + +k9GLWidget::k9GLWidget(QWidget *parent, const char *name):QGLWidget(parent, name) { + XMapRaised(x11Display(),winId()); + + m_buffer=NULL; + m_height=0; + m_width=0; + library=new QLibrary("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(QWidget *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 (qApp==NULL) + return; + if (qApp->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 (qApp !=NULL) + qApp->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 |