| OZ++ Sample: ScreenCapture |
/****************************************************************************** * * Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * ScreenCapture.cpp * *****************************************************************************/ #include <oz++/motif/Image.h> #include <oz++/motif/ScreenCapture.h> #include <oz++/opengl/OpenGLMainView.h> #include <oz++/opengl/OpenGLView.h> #include <oz++/opengl/OpenGLGC.h> #include <oz++/opengl/OpenGLTexture2D.h> namespace OZ { class MainView :public OpenGLMainView { public: private: //Inner class starts. class SimpleView: public OpenGLView { private: OpenGLGC gc; OpenGLTexture2D texture; bool textured; ScreenCapture* captured; //Shallow copy private: void imageToTexture() { XImage* ximage = captured -> getImage() -> get();; if (ximage) { printf("XImage depth=%d\n", ximage->depth); texture.image(0, GL_RGBA, captured ->getWidth(), captured -> getHeight(), 0, GL_BGRA, // GL_UNSIGNED_BYTE, (void*)(ximage->data)); } } public: virtual void display() { if (textured == false) { imageToTexture(); textured = true; } gc.clearColor(1.0, 1.0, 1.0, 1.0); gc.clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); gc.rotate(1.0, 0.5, 1.0, 0.25); gc.begin(GL_QUADS); texture.coord(0.0, 0.0); gc.vertex(-1.0, 1.0, 0.0); texture.coord(1.0, 0.0); gc.vertex( 1.0, 1.0, 0.0); texture.coord(1.0, 1.0); gc.vertex( 1.0, -1.0, 0.0); texture.coord(0.0, 1.0); gc.vertex(-1.0, -1.0, 0.0); gc.end(); } virtual void resize(int w, int h) { if (w == 0 || h == 0) { return; } gc.matrixMode(GL_PROJECTION); gc.loadIdentity(); gc.ortho(-1.25, 1.25, -1.25, 1.25, 1., 20.); gc.matrixMode(GL_MODELVIEW); gc.loadIdentity(); gc.lookAt(0., 0., 10., 0., 0., 0., 0., 1., 0.); } virtual void initialize() { gc.enable(GL_DEPTH_TEST); gc.enable(GL_TEXTURE_2D); texture.bind(); texture.parameter(GL_TEXTURE_MIN_FILTER, GL_LINEAR); texture.parameter(GL_TEXTURE_MAG_FILTER, GL_LINEAR); texture.env(GL_TEXTURE_ENV_MODE, GL_MODULATE); } public: SimpleView(OpenGLMainView* parent, const char* name, Args& args) :OpenGLView(parent, name, args) { textured = false; } ~SimpleView() { } void set(ScreenCapture* capture) { captured = capture; } }; //Inner class ends. private: SmartPtr<SimpleView> view; public: MainView(OpenGLApplication& applet, const char* name, Args& args) :OpenGLMainView(applet, name, args.set(XmNopenGLBufferType, OpenGL_DOUBLE_BUFFER)) //args.set(XmNopenGLBufferType, OpenGL_SINGLE_BUFFER)) { Args ar; ar.set(XmNopenGLBufferType, (XtArgVal)getBufferType()); //ar.set(XmNcolormap, getColormap()); view = new SimpleView(this, "", ar); } ~MainView() { } void set(ScreenCapture* screenCapture) { view -> set(screenCapture); } }; } // int main(int argc, char** argv) { try { const char* appclass = argv[0]; OpenGLApplication applet(appclass, argc, argv); //Capture a region of a default root window. ScreenCapture capture(applet); capture.capture(0, 0, 600, 400); //Create a MainView of the ScreenCature application. Args args; args.set(XmNgeometry, "600x400+40+40"); MainView view(applet, argv[0], args); view.set(&capture); view.realize(); applet.run(); } catch (Exception& ex) { caught(ex); } return 0; }