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Diffstat (limited to 'src/glut/beos/glutGet.cpp')
| -rw-r--r-- | src/glut/beos/glutGet.cpp | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/src/glut/beos/glutGet.cpp b/src/glut/beos/glutGet.cpp new file mode 100644 index 0000000000..33355afb83 --- /dev/null +++ b/src/glut/beos/glutGet.cpp @@ -0,0 +1,240 @@ +/*********************************************************** + * Copyright (C) 1997, Be Inc. All rights reserved. + * + * FILE: glutGet.cpp + * + * DESCRIPTION: get state information from GL + ***********************************************************/ + +/*********************************************************** + * Headers + ***********************************************************/ +#include <GL/glut.h> +#include <string.h> +#include <Autolock.h> +#include "glutint.h" +#include "glutState.h" + +/*********************************************************** + * Global variables + ***********************************************************/ +// rough guess, since we don't know how big the monitor really is +const float dots_per_mm = (72/25.4); // dots per millimeter + +/*********************************************************** + * FUNCTION: glutGet (9.1) + * + * DESCRIPTION: retrieve window and GL state + ***********************************************************/ +int glutGet(GLenum state) { + switch(state) { + case GLUT_WINDOW_X: + {BAutolock winlock(gState.currentWindow->Window()); // need to lock the window + if (gState.currentWindow->parent) + return (int)gState.currentWindow->Frame().left; + else + return (int)gState.currentWindow->Window()->Frame().left; + } + case GLUT_WINDOW_Y: + {BAutolock winlock(gState.currentWindow->Window()); + if (gState.currentWindow->parent) + return (int)gState.currentWindow->Frame().top; + else + return (int)gState.currentWindow->Window()->Frame().top; + } + case GLUT_WINDOW_WIDTH: + {BAutolock winlock(gState.currentWindow->Window()); + return gState.currentWindow->m_width; + } + case GLUT_WINDOW_HEIGHT: + {BAutolock winlock(gState.currentWindow->Window()); + return gState.currentWindow->m_height; + } + case GLUT_WINDOW_PARENT: + {BAutolock winlock(gState.currentWindow->Window()); + if(gState.currentWindow->parent) + return gState.currentWindow->parent->num + 1; + else + return 0; + } + case GLUT_WINDOW_NUM_CHILDREN: + {BAutolock winlock(gState.currentWindow->Window()); + int num = 0; + GlutWindow *children = gState.currentWindow->children; + while (children) { + num++; + children = children->siblings; + } + return num; + } + case GLUT_WINDOW_BUFFER_SIZE: // best guesses + case GLUT_WINDOW_DEPTH_SIZE: + return 32; + + case GLUT_WINDOW_STENCIL_SIZE: + case GLUT_WINDOW_RED_SIZE: // always 24-bit color + case GLUT_WINDOW_GREEN_SIZE: + case GLUT_WINDOW_BLUE_SIZE: + case GLUT_WINDOW_ALPHA_SIZE: + case GLUT_WINDOW_ACCUM_RED_SIZE: + case GLUT_WINDOW_ACCUM_GREEN_SIZE: + case GLUT_WINDOW_ACCUM_BLUE_SIZE: + case GLUT_WINDOW_ACCUM_ALPHA_SIZE: + return 8; + + case GLUT_WINDOW_DOUBLEBUFFER: // always double-buffered RGBA + case GLUT_WINDOW_RGBA: + return 1; + + case GLUT_WINDOW_COLORMAP_SIZE: // don't support these + case GLUT_WINDOW_NUM_SAMPLES: + case GLUT_WINDOW_STEREO: + return 0; + + case GLUT_WINDOW_CURSOR: + return gState.currentWindow->cursor; // don't need to lock window since it won't change + + case GLUT_SCREEN_WIDTH: + return (int)(BScreen().Frame().Width()) + 1; + case GLUT_SCREEN_HEIGHT: + return (int)(BScreen().Frame().Height()) + 1; + case GLUT_SCREEN_WIDTH_MM: + return (int)((BScreen().Frame().Width() + 1) / dots_per_mm); + case GLUT_SCREEN_HEIGHT_MM: + return (int)((BScreen().Frame().Height() + 1) / dots_per_mm); + case GLUT_MENU_NUM_ITEMS: + return gState.currentMenu->num; + case GLUT_DISPLAY_MODE_POSSIBLE: + return __glutConvertDisplayMode(0); // returns 1 if possible + case GLUT_INIT_DISPLAY_MODE: + return gState.displayMode; + case GLUT_INIT_WINDOW_X: + return gState.initX; + case GLUT_INIT_WINDOW_Y: + return gState.initY; + case GLUT_INIT_WINDOW_WIDTH: + return gState.initWidth; + case GLUT_INIT_WINDOW_HEIGHT: + return gState.initHeight; + case GLUT_ELAPSED_TIME: + bigtime_t elapsed, beginning, now; + __glutInitTime(&beginning); + now = system_time(); + elapsed = now - beginning; + return (int) (elapsed / 1000); // 1000 ticks in a millisecond + default: + __glutWarning("invalid glutGet parameter: %d", state); + return -1; + } +} + +/*********************************************************** + * FUNCTION: glutLayerGet (9.2) + * + * DESCRIPTION: since we don't support layers, this is easy + ***********************************************************/ +int glutLayerGet(GLenum info) { + switch(info) { + case GLUT_OVERLAY_POSSIBLE: + case GLUT_HAS_OVERLAY: + return 0; + case GLUT_LAYER_IN_USE: + return GLUT_NORMAL; + case GLUT_TRANSPARENT_INDEX: + return -1; + case GLUT_NORMAL_DAMAGED: + return gState.currentWindow->displayEvent; + case GLUT_OVERLAY_DAMAGED: + return -1; + default: + __glutWarning("invalid glutLayerGet param: %d", info); + return -1; + } +} + +/*********************************************************** + * FUNCTION: glutDeviceGet (9.3) + * + * DESCRIPTION: get info about I/O devices we support + * easy, since BeOS only supports a keyboard and mouse now + ***********************************************************/ +int glutDeviceGet(GLenum info) { + switch(info) { + case GLUT_HAS_KEYBOARD: + case GLUT_HAS_MOUSE: + return 1; + + case GLUT_HAS_SPACEBALL: + case GLUT_HAS_DIAL_AND_BUTTON_BOX: + case GLUT_HAS_TABLET: + case GLUT_NUM_SPACEBALL_BUTTONS: + case GLUT_NUM_BUTTON_BOX_BUTTONS: + case GLUT_NUM_DIALS: + case GLUT_NUM_TABLET_BUTTONS: + return 0; + + case GLUT_NUM_MOUSE_BUTTONS: + { + int32 mouseButtons = 3; // good guess + if(get_mouse_type(&mouseButtons) != B_OK) { + __glutWarning("error getting number of mouse buttons"); + } + return mouseButtons; + } + + default: + __glutWarning("invalid glutDeviceGet parameter: %d", info); + return -1; + } +} + +/*********************************************************** + * FUNCTION: glutGetModifiers (9.4) + * + * DESCRIPTION: get the modifier key state for the current window + ***********************************************************/ +int glutGetModifiers() { + if(gState.modifierKeys == (int) ~0) { + __glutWarning( + "glutCurrentModifiers: do not call outside core input callback."); + return 0; + } + return gState.modifierKeys; +} + +/*********************************************************** + * FUNCTION: glutExtensionSupported (9.5) + * + * DESCRIPTION: is an OpenGL extension supported (from glut_ext.c) + ***********************************************************/ +int glutExtensionSupported(const char *extension) { + static const GLubyte *extensions = NULL; + const GLubyte *start; + GLubyte *where, *terminator; + + /* Extension names should not have spaces. */ + where = (GLubyte *) strchr(extension, ' '); + if (where || *extension == '\0') + return 0; + + if (!extensions) + extensions = glGetString(GL_EXTENSIONS); + /* It takes a bit of care to be fool-proof about parsing the + OpenGL extensions string. Don't be fooled by sub-strings, + + etc. */ + start = extensions; + for (;;) { + where = (GLubyte *) strstr((const char *) start, extension); + if (!where) + break; + terminator = where + strlen(extension); + if (where == start || *(where - 1) == ' ') { + if (*terminator == ' ' || *terminator == '\0') { + return 1; + } + } + start = terminator; + } + return 0; +} |