/* Free complete structure bm (with the structure itself) */
void ws_freebitmap(struct ws_bitmap *bm) {
my_assert(bm);
if (bm->bitmap) {
GrDestroyContext( (GrContext *)bm->bitmap );
}
free(bm);
}
static void paint_screen(void)
{
GrContext *grc;
paint_board(&brd);
paint_button_group(bgact);
paint_board(&brdimg);
grc = GrCreateSubContext(brdimg.x + 4, brdimg.y + 4,
brdimg.x + brdimg.wide - 5,
brdimg.y + brdimg.high - 5, grcglob, NULL);
if (bgact == &bgp1)
GrLoadContextFromPnm(grc, "pnmtest.ppm");
else
GrLoadContextFromPnm(grc, "pnmtest2.ppm");
GrDestroyContext(grc);
the_info(500, 215);
drawing(400, 290, 200, 150, BROWN, DARKGRAY);
the_title(500, 330);
paint_foot("Hold down left mouse buttom to see a comment");
}
int main(void)
{
GrContext *grc;
int wide, high, maxval;
char s[81];
GrEvent ev;
/*GrSetMode( GR_default_graphics ); */
GrSetMode(GR_width_height_color_graphics, 640, 480, 32768);
GrEventInit();
GrMouseDisplayCursor();
GrQueryPnm(FIMAGEPPM, &wide, &high, &maxval);
sprintf(s, "%s %d x %d pixels", FIMAGEPPM, wide, high);
GrTextXY(10, 20, s, GrBlack(), GrWhite());
GrBox(10, 40, 10+wide+1, 40+high+1, GrWhite());
grc = GrCreateSubContext(11, 41, 11+wide-1, 41+high-1, NULL, NULL);
GrLoadContextFromPnm(grc, FIMAGEPPM);
GrSaveContextToPgm(grc, FIMAGEPGM, "TestPnm");
GrDestroyContext(grc);
GrTextXY(10, 50+high, "Press RETURN to continue", GrBlack(), GrWhite());
GrEventWaitKeyOrClick(&ev);
GrClearScreen(GrBlack());
GrQueryPnm(FIMAGEPGM, &wide, &high, &maxval);
sprintf(s, "%s %d x %d pixels", FIMAGEPGM, wide, high);
GrTextXY(10, 20, s, GrBlack(), GrWhite());
GrBox(10, 40, 10+wide+1, 40+high+1, GrWhite());
grc = GrCreateSubContext(11, 41, 11+wide-1, 41+high-1, NULL, NULL);
GrLoadContextFromPnm(grc,FIMAGEPGM);
GrDestroyContext(grc);
GrTextXY(10, 50+high, "Press RETURN to continue", GrBlack(), GrWhite());
GrEventWaitKeyOrClick(&ev);
GrClearScreen(GrBlack());
GrQueryPnm(FIMAGEPBM, &wide, &high, &maxval);
sprintf(s, "%s %d x %d pixels", FIMAGEPBM, wide, high);
GrTextXY(10, 20, s, GrBlack(), GrWhite());
GrBox(10, 40, 10+wide+1, 40+high+1, GrWhite());
grc = GrCreateSubContext(11, 41, 11+wide-1, 41+high-1, NULL, NULL);
GrLoadContextFromPnm(grc,FIMAGEPBM);
GrSaveContextToPbm(grc, FIMAGEPBM2, "TestPnm");
GrDestroyContext(grc);
GrTextXY(10, 50+high, "Press RETURN to continue", GrBlack(), GrWhite());
GrEventWaitKeyOrClick(&ev);
GrClearScreen(GrBlack());
GrQueryPnm(FIMAGEPPM, &wide, &high, &maxval);
GrBox(10, 40, 10+wide+1, 40+high+1, GrWhite());
grc = GrCreateSubContext(11, 41, 11+wide-1, 41+high-1, NULL, NULL);
GrLoadContextFromPnm(grc,FIMAGEPPM);
GrDestroyContext(grc);
GrQueryPnm(FIMAGEPGM, &wide, &high, &maxval);
GrBox(110, 140, 110+wide+1, 140+high+1, GrWhite());
grc = GrCreateSubContext(111, 141, 111+wide-1, 141+high-1, NULL, NULL);
GrLoadContextFromPnm(grc, FIMAGEPGM);
GrDestroyContext(grc);
GrQueryPnm(FIMAGEPBM, &wide, &high, &maxval);
GrBox(210, 240, 210+wide+1, 240+high+1, GrWhite());
grc = GrCreateSubContext(211, 241, 211+wide-1, 241+high-1, NULL, NULL);
GrLoadContextFromPnm(grc,FIMAGEPBM2);
GrDestroyContext(grc);
GrTextXY(10, 20, "Press RETURN to save screen", GrBlack(), GrWhite());
GrEventWaitKeyOrClick(&ev);
GrSaveContextToPpm(NULL, FSCREEN, "TestPnm");
GrClearScreen(GrWhite());
GrTextXY(10, 20, "Press RETURN to reload screen", GrWhite(), GrBlack());
GrEventWaitKeyOrClick(&ev);
GrLoadContextFromPnm(NULL, FSCREEN);
GrTextXY(10, 20, "Press RETURN to end ", GrBlack(), GrWhite());
GrEventWaitKeyOrClick(&ev);
GrEventUnInit();
GrSetMode(GR_default_text);
return 0;
}
int main(void)
{
GrContext *pContext;
int sizex = 40;
int sizey = 40;
int x = 0;
int y = 40;
GrColor fcolor, bcolor;
int k;
GrEvent ev;
GrSetMode(GR_default_graphics);
GrEventInit();
GrMouseDisplayCursor();
/* Create a 1bpp bitmap */
pContext = GrCreateFrameContext(GR_frameRAM1, sizex, sizey, NULL, NULL);
/* draw something (black and white) into the bitmap */
GrSetContext(pContext);
GrClearContext(GrBlack());
GrLine(0, 0, sizex-1, sizey-1, GrWhite());
GrLine(0, sizey-1, sizex-1, 0, GrWhite());
GrSetContext(NULL);
fcolor = GrAllocColor(255, 0, 0);
bcolor = GrAllocColor(0, 0, 255);
GrTextXY(0, 0, "Type u d l r U D L R to move, 1 2 to change color, q to quit",
GrWhite(), GrNOCOLOR);
GrSetClipBox(0, 40, GrScreenX(), GrScreenY());
/* Put the bitmap into the screen */
GrBitBlt1bpp(NULL, x, y, pContext, 0, 0, sizex-1, sizey-1, fcolor, bcolor);
while (1) {
k = '\0';
GrEventWait(&ev);
if (ev.type == GREV_KEY) k = ev.p1;
if (k == 'q') break;
switch (k) {
case 'u': y--; break;
case 'd': y++; break;
case 'l': x--; break;
case 'r': x++; break;
case 'U': y -= 10; break;
case 'D': y += 10; break;
case 'L': x -= 10; break;
case 'R': x += 10; break;
case '1': fcolor = GrAllocColor(255, 0, 0);
bcolor = GrAllocColor(0, 0, 255);
break;
case '2': fcolor = GrAllocColor(0, 255, 255);
bcolor = GrAllocColor(255, 255, 0);
break;
default: continue;
}
if (x < -40) x = -40;
if (x > GrScreenX()) x = GrScreenX();
if (y < 0) y = 0;
if (y > GrScreenY()) y = GrScreenY();
GrBitBlt1bpp( NULL, x, y, pContext, 0, 0, sizex-1, sizey-1, fcolor, bcolor);
}
/* Destroy */
GrDestroyContext(pContext);
GrEventUnInit();
GrSetMode(GR_default_text);
return 0;
}
