114 lines
2.6 KiB
C
114 lines
2.6 KiB
C
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/*
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* Demonstration program for Nano-X graphics.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define MWINCLUDECOLORS
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#include <microwin/nano-X.h>
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#include <GL/gl.h>
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#include <GL/nglx.h>
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#include "ui.h"
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static GR_WINDOW_ID w1; /* id for large window */
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static GR_GC_ID gc1; /* graphics context for text */
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void errorcatcher(); /* routine to handle errors */
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void tkSwapBuffers(void)
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{
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nglXSwapBuffers(w1);
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}
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int
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ui_loop(int argc,char **argv, const char *name)
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{
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GR_EVENT event; /* current event */
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GR_IMAGE_ID id = 0;
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NGLXContext cx;
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int width, height, k;
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if (GrOpen() < 0) {
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fprintf(stderr, "cannot open graphics\n");
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exit(1);
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}
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width = 400;
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height = 300;
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GrSetErrorHandler(errorcatcher);
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w1 = GrNewWindow(GR_ROOT_WINDOW_ID, 10, 10, width, height, 4, BLACK, WHITE);
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GrSelectEvents(w1, GR_EVENT_MASK_CLOSE_REQ|GR_EVENT_MASK_EXPOSURE|GR_EVENT_MASK_KEY_DOWN);
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GrMapWindow(w1);
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gc1 = GrNewGC();
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GrSetGCForeground(gc1, WHITE);
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cx = nglXCreateContext(NULL, 0);
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nglXMakeCurrent(w1, cx);
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init();
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reshape(width, height);
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while (1) {
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GrCheckNextEvent(&event);
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switch(event.type) {
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case GR_EVENT_TYPE_CLOSE_REQ:
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GrFreeImage(id);
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GrClose();
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exit(0);
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case GR_EVENT_TYPE_EXPOSURE:
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break;
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case GR_EVENT_TYPE_KEY_DOWN:
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{
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GR_EVENT_KEYSTROKE *kp = &event.keystroke;
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/* XXX: nanoX special keys are totally bugged ! */
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switch(kp->ch) {
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case 81:
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k = KEY_LEFT;
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break;
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case 83:
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k = KEY_RIGHT;
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break;
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case 82:
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k = KEY_UP;
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break;
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case 84:
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k = KEY_DOWN;
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break;
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default:
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k = kp->ch;
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break;
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}
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key(k, 0);
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}
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break;
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default:
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idle();
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break;
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}
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}
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return 0;
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}
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/*
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* Here on an unrecoverable error.
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*/
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void
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errorcatcher(code, name, id)
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GR_ERROR code; /* error code */
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GR_FUNC_NAME name; /* function name which failed */
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GR_ID id; /* resource id */
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{
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GrClose();
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fprintf(stderr, "DEMO ERROR: code %d, function %s, resource id %d\n",
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code, name, id);
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exit(1);
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}
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