/*
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/*
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* Demonstration program for freetype truetype font support
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* Demonstration program for freetype truetype font support
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* Martin Jolicoeur 2000 martinj@visuaide.com.
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* Martin Jolicoeur 2000 martinj@visuaide.com.
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*/
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*/
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#include <stdio.h>
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#include <stdio.h>
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#define MWINCLUDECOLORS
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#define MWINCLUDECOLORS
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#include "nano-X.h"
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#include "nano-X.h"
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#if HAVE_T1LIB_SUPPORT
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#if HAVE_T1LIB_SUPPORT
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#define FONTNAME "bchr"
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#define FONTNAME "bchr"
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#if 0
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#if 0
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#define FONTNAME "bchb"
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#define FONTNAME "bchb"
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#define FONTNAME "dcr10"
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#define FONTNAME "dcr10"
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#define FONTNAME "dcbx10"
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#define FONTNAME "dcbx10"
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#endif
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#endif
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#elif HAVE_FREETYPE_SUPPORT
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#elif HAVE_FREETYPE_SUPPORT
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#define FONTNAME "lt1-r-omega-serif"
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#define FONTNAME "lt1-r-omega-serif"
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#if 0
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#if 0
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#define FONTNAME "times"
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#define FONTNAME "times"
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#define FONTNAME "cour"
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#define FONTNAME "cour"
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#endif
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#endif
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#else
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#else
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#define FONTNAME GR_FONT_SYSTEM_VAR
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#define FONTNAME GR_FONT_SYSTEM_VAR
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#endif
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#endif
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#define MAXW 400
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#define MAXW 400
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#define MAXH 400
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#define MAXH 400
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GR_GC_ID gid;
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GR_GC_ID gid;
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GR_FONT_ID fontid, fontid2;
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GR_FONT_ID fontid, fontid2;
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GR_BOOL kerning = GR_FALSE;
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GR_BOOL kerning = GR_FALSE;
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GR_BOOL aa = GR_TRUE;
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GR_BOOL aa = GR_TRUE;
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GR_BOOL underline = GR_FALSE;
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GR_BOOL underline = GR_FALSE;
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int angle = 0;
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int angle = 0;
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int state = GR_TFBOTTOM;
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int state = GR_TFBOTTOM;
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char buffer[128];
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char buffer[128];
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int n;
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int n;
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void Render(GR_WINDOW_ID window);
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void Render(GR_WINDOW_ID window);
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int
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int
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main()
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main()
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{
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{
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FILE *file;
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FILE *file;
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GR_EVENT event;
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GR_EVENT event;
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GR_WINDOW_ID window;
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GR_WINDOW_ID window;
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if (GrOpen() < 0) {
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if (GrOpen() < 0) {
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fprintf(stderr, "cannot open graphics\n");
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fprintf(stderr, "cannot open graphics\n");
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exit(1);
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exit(1);
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}
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}
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window = GrNewWindow(GR_ROOT_WINDOW_ID, 50,50, MAXW,MAXH, 4, BLACK, WHITE);
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window = GrNewWindow(GR_ROOT_WINDOW_ID, 50,50, MAXW,MAXH, 4, BLACK, WHITE);
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GrMapWindow(window);
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GrMapWindow(window);
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gid = GrNewGC ();
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gid = GrNewGC ();
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GrSelectEvents(window, GR_EVENT_MASK_KEY_DOWN |
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GrSelectEvents(window, GR_EVENT_MASK_KEY_DOWN |
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GR_EVENT_MASK_CLOSE_REQ | GR_EVENT_MASK_EXPOSURE);
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GR_EVENT_MASK_CLOSE_REQ | GR_EVENT_MASK_EXPOSURE);
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if ((file = fopen("ftdemo.txt", "r")) == NULL) {
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if ((file = fopen("ftdemo.txt", "r")) == NULL) {
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printf("Can't open text file\n");
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printf("Can't open text file\n");
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return (-1);
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return (-1);
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}
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}
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n = 0;
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n = 0;
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if(fgets(buffer, 128, file) != NULL) {
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if(fgets(buffer, 128, file) != NULL) {
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for (n = 0; n < 128 && buffer[n]; n++) {
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for (n = 0; n < 128 && buffer[n]; n++) {
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if (buffer[n] == '\n')
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if (buffer[n] == '\n')
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break;
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break;
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}
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}
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}
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}
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fclose(file);
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fclose(file);
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fontid = GrCreateFont(FONTNAME, 20, NULL);
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fontid = GrCreateFont(FONTNAME, 20, NULL);
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fontid2 = GrCreateFont(FONTNAME, 36, NULL);
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fontid2 = GrCreateFont(FONTNAME, 36, NULL);
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Render(window);
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Render(window);
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while (1) {
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while (1) {
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GrGetNextEvent(&event);
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GrGetNextEvent(&event);
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switch (event.type) {
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switch (event.type) {
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case GR_EVENT_TYPE_KEY_DOWN:
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case GR_EVENT_TYPE_KEY_DOWN:
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switch(event.keystroke.ch) {
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switch(event.keystroke.ch) {
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case 171: /* + */
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case 171: /* + */
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case '+':
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case '+':
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case '=':
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case '=':
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angle += 100; /* Increase 10 degrees */
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angle += 100; /* Increase 10 degrees */
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angle %= 3600;
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angle %= 3600;
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break;
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break;
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case 173: /* - */
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case 173: /* - */
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case '-':
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case '-':
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case '_':
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case '_':
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angle -= 100; /* Decrease 10 degrees */
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angle -= 100; /* Decrease 10 degrees */
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angle %= 3600;
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angle %= 3600;
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break;
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break;
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case 'a':
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case 'a':
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aa = (aa == GR_FALSE)?GR_TRUE:GR_FALSE;
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aa = (aa == GR_FALSE)?GR_TRUE:GR_FALSE;
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break;
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break;
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case 'k':
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case 'k':
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kerning = (kerning == GR_FALSE)?GR_TRUE:GR_FALSE;
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kerning = (kerning == GR_FALSE)?GR_TRUE:GR_FALSE;
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break;
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break;
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case 'l':
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case 'l':
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state = (state == GR_TFBOTTOM)?GR_TFBASELINE: \
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state = (state == GR_TFBOTTOM)?GR_TFBASELINE: \
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(state == GR_TFBASELINE)?GR_TFTOP:GR_TFBOTTOM;
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(state == GR_TFBASELINE)?GR_TFTOP:GR_TFBOTTOM;
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break;
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break;
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case 'u':
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case 'u':
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underline = underline? GR_FALSE: GR_TRUE;
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underline = underline? GR_FALSE: GR_TRUE;
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break;
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break;
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default:
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default:
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continue;
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continue;
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/* Unknown keystroke */
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/* Unknown keystroke */
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}
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}
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Render(window);
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Render(window);
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break;
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break;
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case GR_EVENT_TYPE_EXPOSURE:
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case GR_EVENT_TYPE_EXPOSURE:
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Render(window);
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Render(window);
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break;
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break;
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case GR_EVENT_TYPE_CLOSE_REQ:
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case GR_EVENT_TYPE_CLOSE_REQ:
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GrClose();
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GrClose();
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exit(0);
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exit(0);
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}
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}
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}
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}
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return 0;
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return 0;
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}
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}
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void Render(GR_WINDOW_ID window)
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void Render(GR_WINDOW_ID window)
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{
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{
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GrSetGCBackground(gid, WHITE);
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GrSetGCBackground(gid, WHITE);
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GrSetGCForeground (gid, WHITE);
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GrSetGCForeground (gid, WHITE);
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GrSetGCUseBackground(gid, GR_FALSE);
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GrSetGCUseBackground(gid, GR_FALSE);
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GrFillRect(window, gid, 0, 0, MAXW, MAXH);
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GrFillRect(window, gid, 0, 0, MAXW, MAXH);
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GrSetGCForeground (gid, BLACK);
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GrSetGCForeground (gid, BLACK);
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/* Draw menu */
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/* Draw menu */
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GrSetGCFont(gid, fontid);
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GrSetGCFont(gid, fontid);
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GrSetFontAttr(fontid, GR_TFKERNING | GR_TFANTIALIAS, 0);
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GrSetFontAttr(fontid, GR_TFKERNING | GR_TFANTIALIAS, 0);
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GrText(window, gid, 5, 20, "+ Rotate string clockwise", 25, GR_TFASCII);
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GrText(window, gid, 5, 20, "+ Rotate string clockwise", 25, GR_TFASCII);
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GrText(window, gid, 5, 40, "- Rotate string counter-clockwise", 34, GR_TFASCII);
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GrText(window, gid, 5, 40, "- Rotate string counter-clockwise", 34, GR_TFASCII);
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GrText(window, gid, 5, 60, "a Toggle anti-aliasing", 22, GR_TFASCII);
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GrText(window, gid, 5, 60, "a Toggle anti-aliasing", 22, GR_TFASCII);
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GrText(window, gid, 5, 80, "k Toggle kerning", 16, GR_TFASCII);
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GrText(window, gid, 5, 80, "k Toggle kerning", 16, GR_TFASCII);
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GrText(window, gid, 5, 100, "u Toggle underline", 18, GR_TFASCII);
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GrText(window, gid, 5, 100, "u Toggle underline", 18, GR_TFASCII);
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GrText(window, gid, 5, 120, "l Toggle alignment bottom/baseline/top", 39, GR_TFASCII);
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GrText(window, gid, 5, 120, "l Toggle alignment bottom/baseline/top", 39, GR_TFASCII);
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/* Draw test string */
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/* Draw test string */
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GrSetGCFont(gid, fontid2);
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GrSetGCFont(gid, fontid2);
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GrSetFontAttr(fontid2, (kerning?GR_TFKERNING:0) | (aa?GR_TFANTIALIAS:0) |
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GrSetFontAttr(fontid2, (kerning?GR_TFKERNING:0) | (aa?GR_TFANTIALIAS:0) |
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(underline?GR_TFUNDERLINE: 0), -1);
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(underline?GR_TFUNDERLINE: 0), -1);
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GrSetFontRotation(fontid2, angle);
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GrSetFontRotation(fontid2, angle);
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GrText(window, gid, MAXW/2, MAXH/2, buffer, n, state|GR_TFUTF8);
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GrText(window, gid, MAXW/2, MAXH/2, buffer, n, state|GR_TFUTF8);
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/* Draw arrow */
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/* Draw arrow */
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GrLine (window, gid, (MAXW/2)-10 , MAXH/2, (MAXW/2)+10, MAXH/2);
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GrLine (window, gid, (MAXW/2)-10 , MAXH/2, (MAXW/2)+10, MAXH/2);
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GrLine (window, gid, MAXW/2, (MAXH/2)-10, MAXW/2, (MAXH/2)+10);
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GrLine (window, gid, MAXW/2, (MAXH/2)-10, MAXW/2, (MAXH/2)+10);
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}
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}
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