718 lines
17 KiB
C
Executable File
718 lines
17 KiB
C
Executable File
/** \file
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* \brief GL Font functions.
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*
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* See Copyright Notice in "iup.h"
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*/
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#ifdef WIN32
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#include <windows.h>
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#else
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#include <iconv.h>
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#endif
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#include <FTGL/ftgl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "iup.h"
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#include "iupgl.h"
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#include "iup_assert.h"
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#include "iup_object.h"
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#include "iup_attrib.h"
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#include "iup_str.h"
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#include "iup_array.h"
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#include "iup_drvfont.h"
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#include "iup_glcontrols.h"
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#include "iup_glfont.h"
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typedef struct _IglFont
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{
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char filename[10240];
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int size;
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FTGLfont* ftgl_font;
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int charwidth, charheight;
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} IglFont;
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static char* gl_utf8_buffer = NULL;
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static int gl_utf8_buffer_len = 0;
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#ifdef WIN32
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typedef char regName[MAX_PATH];
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static regName* win_fonts = NULL;
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static int win_fonts_count = 0;
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static int iCompareStr(const void *a, const void *b)
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{
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const regName*aa = a;
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const regName*bb = b;
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return strcmp(*aa, *bb);
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}
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static void winInitFontNames(void)
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{
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const CHAR* subkey = "Software\\Microsoft\\Windows NT\\CurrentVersion\\Fonts";
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HKEY hkey = NULL;
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DWORD dwIndex = 0;
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LONG ret;
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DWORD dwValuesCount, dwValueSize;
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ret = RegOpenKeyExA(HKEY_LOCAL_MACHINE, subkey, 0, KEY_READ, &hkey);
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if (ret != ERROR_SUCCESS)
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return;
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ret = RegQueryInfoKey(hkey, NULL, NULL, NULL, NULL, NULL, NULL,
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&dwValuesCount, NULL, NULL, NULL, NULL);
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if (ret != ERROR_SUCCESS)
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return;
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win_fonts_count = (int)dwValuesCount;
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win_fonts = malloc(sizeof(regName) * win_fonts_count);
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for (dwIndex = 0; dwIndex < dwValuesCount; dwIndex++)
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{
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dwValueSize = MAX_PATH - 1;
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ret = RegEnumValueA(hkey, dwIndex, win_fonts[dwIndex], &dwValueSize, NULL, NULL, NULL, NULL);
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if (ret != ERROR_SUCCESS)
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{
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win_fonts_count = (int)dwIndex;
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break;
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}
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}
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qsort(win_fonts, win_fonts_count, sizeof(regName), iCompareStr);
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RegCloseKey(hkey);
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}
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static int winReadStringKey(HKEY base_key, const char* subkey, const char* value_name, char* value)
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{
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HKEY key;
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DWORD max_size = 1024;
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if (RegOpenKeyExA(base_key, subkey, 0, KEY_READ, &key) != ERROR_SUCCESS)
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return 0;
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if (RegQueryValueExA(key, value_name, NULL, NULL, (LPBYTE)value, &max_size) != ERROR_SUCCESS)
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{
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RegCloseKey(key);
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return 0;
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}
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RegCloseKey(key);
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return 1;
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}
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static char* winGetFontDir(void)
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{
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static char font_dir[1024];
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if (!winReadStringKey(HKEY_CURRENT_USER, "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders", "Fonts", font_dir))
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return "";
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else
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return font_dir;
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}
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static int iGLGetFontFilenameFromSystem(const char *font_name, int is_bold, int is_italic, char* fileName)
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{
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CHAR szData[1024];
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const CHAR* subkey = "Software\\Microsoft\\Windows NT\\CurrentVersion\\Fonts";
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char localFontName[MAX_PATH];
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int i;
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if (iupStrEqualNoCase(font_name, "Courier") || iupStrEqualNoCase(font_name, "Monospace"))
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font_name = "Courier New";
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else if (iupStrEqualNoCase(font_name, "Times") || iupStrEqualNoCase(font_name, "Serif"))
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font_name = "Times New Roman";
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else if (iupStrEqualNoCase(font_name, "Helvetica") || iupStrEqualNoCase(font_name, "Sans"))
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font_name = "Arial";
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strcpy(localFontName, font_name);
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if (is_bold)
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strcat(localFontName, " Bold");
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if (is_italic)
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strcat(localFontName, " Italic");
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for (i = 0; i < win_fonts_count; i++)
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{
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if (iupStrEqualNoCasePartial(win_fonts[i], localFontName))
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{
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if (winReadStringKey(HKEY_LOCAL_MACHINE, subkey, win_fonts[i], szData))
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{
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/* szData already includes file extension */
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sprintf(fileName, "%s\\%s", winGetFontDir(), szData);
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return 1;
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}
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}
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}
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return 0;
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}
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#else
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#ifndef NO_FONTCONFIG
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#include <fontconfig/fontconfig.h>
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static int iGLGetFontFilenameFromSystem(const char *font_name, int is_bold, int is_italic, char* fileName)
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{
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char styles[4][20];
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int style_size;
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FcObjectSet *os = 0;
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FcFontSet *fs;
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FcPattern *pat;
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int bResult = 0;
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/* Use "fc-match monospace|sans|serif" in Lunux to find a match */
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if (iupStrEqualNoCase(font_name, "Courier") || iupStrEqualNoCase(font_name, "Courier New") || iupStrEqualNoCase(font_name, "Monospace"))
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font_name = "DejaVu Sans Mono";
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else if (iupStrEqualNoCase(font_name, "Times") || iupStrEqualNoCase(font_name, "Times New Roman") || iupStrEqualNoCase(font_name, "Serif"))
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font_name = "DejaVu Serif";
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else if (iupStrEqualNoCase(font_name, "Helvetica") || iupStrEqualNoCase(font_name, "Arial") || iupStrEqualNoCase(font_name, "Sans"))
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font_name = "DejaVu Sans";
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if (is_bold && is_italic)
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{
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strcpy(styles[0], "BoldItalic");
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strcpy(styles[1], "Bold Italic");
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strcpy(styles[2], "Bold Oblique");
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strcpy(styles[3], "BoldOblique");
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style_size = 4;
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}
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else if (is_bold)
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{
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strcpy(styles[0], "Bold");
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style_size = 1;
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}
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else if (is_italic)
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{
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strcpy(styles[0], "Italic");
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strcpy(styles[1], "Oblique");
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style_size = 2;
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}
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else
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{
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strcpy(styles[0], "Regular");
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strcpy(styles[1], "Normal");
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strcpy(styles[2], "Medium");
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strcpy(styles[3], "Book");
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style_size = 4;
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}
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pat = FcPatternCreate();
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os = FcObjectSetBuild(FC_FAMILY, FC_FILE, FC_STYLE, NULL);
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fs = FcFontList(NULL, pat, os);
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if (pat)
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FcPatternDestroy(pat);
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if (fs)
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{
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int j, s;
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for (j = 0; j < fs->nfont; j++)
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{
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FcChar8 *family;
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FcPatternGetString(fs->fonts[j], FC_FAMILY, 0, &family);
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if (iupStrEqualNoCase((char*)family, font_name))
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{
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FcChar8 *file;
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FcChar8 *style;
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FcPatternGetString(fs->fonts[j], FC_FILE, 0, &file);
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FcPatternGetString(fs->fonts[j], FC_STYLE, 0, &style);
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for (s = 0; s < style_size; s++)
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{
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if (iupStrEqualNoCase(styles[s], (char*)style))
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{
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strcpy(fileName, (char*)file);
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FcFontSetDestroy(fs);
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return 1;
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}
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}
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/* set a value to be used if the style is not found.
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the last family found will be used */
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strcpy(fileName, (char*)file);
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bResult = 1;
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}
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}
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FcFontSetDestroy(fs);
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}
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return bResult;
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}
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#else
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static int iGLGetFontFilenameFromSystem(const char *font_name, int is_bold, int is_italic, char* fileName)
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{
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(void)font_name;
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(void)is_bold;
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(void)is_italic;
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(void)fileName;
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return 0;
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}
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#endif
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#endif
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static int iGLGetFontFilenameFromTypeface(const char* path, const char* typeface, const char* ext, char* filename)
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{
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FILE *file;
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/* current directory */
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sprintf(filename, "%s.%s", typeface, ext);
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file = fopen(filename, "r");
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if (!file)
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{
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/* path from the environment */
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if (path)
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{
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sprintf(filename, "%s/%s.%s", path, typeface, ext);
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file = fopen(filename, "r");
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}
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if (!file)
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{
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#ifdef WIN32
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/* Windows Font folder */
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sprintf(filename, "%s\\%s.%s", winGetFontDir(), typeface, ext);
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file = fopen(filename, "r");
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if (!file)
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return 0;
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#else
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return 0;
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#endif
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}
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}
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fclose(file);
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return 1;
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}
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static char* iGLGetFontNameTex(const char* typeface)
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{
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if (iupStrEqualNoCase(typeface, "sans") ||
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iupStrEqualNoCase(typeface, "helvetica") ||
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iupStrEqualNoCase(typeface, "arial"))
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return "heros";
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if (iupStrEqualNoCase(typeface, "monospace") ||
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iupStrEqualNoCase(typeface, "courier") ||
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iupStrEqualNoCase(typeface, "courier new"))
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return "cursor";
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if (iupStrEqualNoCase(typeface, "serif") ||
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iupStrEqualNoCase(typeface, "times") ||
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iupStrEqualNoCase(typeface, "times new roman"))
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return "termes";
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return NULL;
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}
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static char* iGLGetFontNameTTF(const char* typeface)
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{
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if (iupStrEqualNoCase(typeface, "sans") ||
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iupStrEqualNoCase(typeface, "helvetica") ||
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iupStrEqualNoCase(typeface, "arial"))
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return "arial";
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if (iupStrEqualNoCase(typeface, "monospace") ||
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iupStrEqualNoCase(typeface, "courier") ||
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iupStrEqualNoCase(typeface, "courier new"))
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return "cour";
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if (iupStrEqualNoCase(typeface, "serif") ||
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iupStrEqualNoCase(typeface, "times") ||
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iupStrEqualNoCase(typeface, "times new roman"))
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return "times";
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return NULL;
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}
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static int iGLGetFontFilenameFromNamesOTF(const char* path, const char* typeface, char* filename, int is_bold, int is_italic)
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{
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char fontname[100];
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char* face = iGLGetFontNameTex(typeface);
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if (face)
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sprintf(fontname, "texgyre%s-", face);
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else
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sprintf(fontname, "texgyre%s-", typeface);
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if (is_bold && is_italic)
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strcat(fontname, "bolditalic");
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else if (is_italic)
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strcat(fontname, "italic");
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else if (is_bold)
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strcat(fontname, "bold");
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else
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strcat(fontname, "regular");
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return iGLGetFontFilenameFromTypeface(path, fontname, "otf", filename);
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}
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static int iGLGetFontFilenameFromNamesTTF(const char* path, const char* typeface, char* filename, int is_bold, int is_italic)
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{
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char fontname[100];
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char* face = iGLGetFontNameTTF(typeface);
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if (face)
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strcpy(fontname, face);
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else
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strcpy(fontname, typeface);
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if (is_bold && is_italic)
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strcat(fontname, "bi");
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else if (is_italic)
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strcat(fontname, "i");
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else if (is_bold)
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strcat(fontname, "bd");
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return iGLGetFontFilenameFromTypeface(path, fontname, "ttf", filename);
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}
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static void iGLGetFontFilename(char* filename, const char *typeface, int is_bold, int is_italic)
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{
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char *path = getenv("FREETYPEFONTS_DIR");
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if (!path)
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path = IupGetGlobal("FREETYPEFONTS_DIR");
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/* search for the font in the system */
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/* "Helvetica" "Courier" "Times" "Segoe UI" "Tahoma" etc */
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if (iGLGetFontFilenameFromSystem(typeface, is_bold, is_italic, filename))
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return;
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/* try typeface as a file title, compose with path to get a filename
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assume style already in the typeface */
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/* "ariali" "courbd" "texgyrecursor-bold" */
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if (iGLGetFontFilenameFromTypeface(path, typeface, "ttf", filename))
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return;
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if (iGLGetFontFilenameFromTypeface(path, typeface, "otf", filename))
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return;
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/* check for the pre-defined names, and use style to compose the filename */
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/* "cursor" */
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if (iGLGetFontFilenameFromNamesTTF(path, typeface, filename, is_bold, is_italic))
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return;
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if (iGLGetFontFilenameFromNamesOTF(path, typeface, filename, is_bold, is_italic))
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return;
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/* try the typeface as file name */
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strcpy(filename, typeface);
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}
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static int iGLFontGetFontAveWidth(FTGLfont* ftgl_font);
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static IglFont* iGLFindFont(Ihandle* ih, Ihandle* gl_parent, const char *font)
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{
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char filename[10240];
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char typeface[50] = "";
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FTGLfont* ftgl_font;
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int size = 8;
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int is_bold = 0,
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is_italic = 0,
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is_underline = 0,
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is_strikeout = 0;
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int i, count;
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IglFont* fonts;
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double res = IupGetDouble(NULL, "SCREENDPI");
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Iarray* gl_fonts = (Iarray*)iupAttribGet(gl_parent, "GL_FONTLIST");
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if (!gl_fonts)
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{
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gl_fonts = iupArrayCreate(50, sizeof(IglFont));
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iupAttribSet(gl_parent, "GL_FONTLIST", (char*)gl_fonts);
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}
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if (!iupGetFontInfo(font, typeface, &size, &is_bold, &is_italic, &is_underline, &is_strikeout))
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return NULL;
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if (is_underline)
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iupAttribSet(ih, "UNDERLINE", "1");
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else
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iupAttribSet(ih, "UNDERLINE", NULL);
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iGLGetFontFilename(filename, typeface, is_bold, is_italic);
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if (size < 0)
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size = iupRound((-size*72.0) / res); /* convert to points */
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/* Check if the filename already exists in cache */
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fonts = (IglFont*)iupArrayGetData(gl_fonts);
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count = iupArrayCount(gl_fonts);
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for (i = 0; i < count; i++)
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{
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if (iupStrEqualNoCase(filename, fonts[i].filename) && fonts[i].size == size)
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return &fonts[i];
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}
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ftgl_font = ftglCreateTextureFont(filename);
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if (!ftgl_font)
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return NULL;
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ftglSetFontFaceSize(ftgl_font, size, (int)res);
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/* create room in the array */
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fonts = (IglFont*)iupArrayInc(gl_fonts);
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strcpy(fonts[i].filename, filename);
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fonts[i].ftgl_font = ftgl_font;
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fonts[i].size = size;
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/* NOTICE that this is different from CD,
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here we need average width,
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there is maximum width. */
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fonts[i].charwidth = iGLFontGetFontAveWidth(ftgl_font);
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fonts[i].charheight = iupRound(ftglGetFontLineHeight(ftgl_font));
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return &fonts[i];
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}
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static IglFont* iGLFontCreateNativeFont(Ihandle *ih, const char* value)
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{
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IglFont* glfont;
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Ihandle* gl_parent = (Ihandle*)iupAttribGet(ih, "_IUP_GLCANVAS_PARENT");
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IupGLMakeCurrent(gl_parent);
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glfont = iGLFindFont(ih, gl_parent, value);
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if (!glfont)
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{
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iupERROR1("Failed to create Font: %s", value);
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return NULL;
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}
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iupAttribSet(ih, "_IUP_GLFONT", (char*)glfont);
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return glfont;
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}
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static IglFont* iGLFontGet(Ihandle *ih)
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{
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IglFont* glfont = (IglFont*)iupAttribGet(ih, "_IUP_GLFONT");
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if (!glfont)
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glfont = iGLFontCreateNativeFont(ih, IupGetAttribute(ih, "FONT"));
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return glfont;
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}
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IUP_SDK_API char* iupStrConvertToUTF8(const char* str, int len, char* utf8_buffer, int *utf8_buffer_max, int utf8mode);
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static void iGLFontConvertToUTF8(const char* str, int len)
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{
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/* FTGL multibyte strings are always UTF-8 */
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int utf8mode = IupGetInt(NULL, "UTF8MODE");
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gl_utf8_buffer = iupStrConvertToUTF8(str, len, gl_utf8_buffer, &gl_utf8_buffer_len, utf8mode);
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}
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static int iGLFontGetFontAveWidth(FTGLfont* ftgl_font)
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{
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static int first = 1;
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static char sample[512] = "";
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if (first)
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{
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int utf8mode = IupGetInt(NULL, "UTF8MODE");
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/* use all Latin-1 characters */
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int i;
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for (i = 32; i < 256; i++)
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sample[i - 32] = (char)i;
|
|
|
|
if (utf8mode) IupSetGlobal("UTF8MODE", "No");
|
|
iGLFontConvertToUTF8(sample, 256 - 32);
|
|
if (utf8mode) IupSetGlobal("UTF8MODE", "Yes");
|
|
|
|
i = (int)strlen(gl_utf8_buffer);
|
|
memcpy(sample, gl_utf8_buffer, i + 1);
|
|
first = 0;
|
|
}
|
|
|
|
return iupRound(ftglGetFontAdvance(ftgl_font, sample) / (256.0f - 32.0f));
|
|
}
|
|
|
|
int iupGLFontGetStringWidth(Ihandle* ih, const char* str, int len)
|
|
{
|
|
IglFont* glfont;
|
|
|
|
if (!ih->handle)
|
|
return 0;
|
|
|
|
glfont = iGLFontGet(ih);
|
|
if (!glfont)
|
|
return 0;
|
|
|
|
iGLFontConvertToUTF8(str, len);
|
|
return iupRound(ftglGetFontAdvance(glfont->ftgl_font, gl_utf8_buffer));
|
|
}
|
|
|
|
void iupGLFontGetMultiLineStringSize(Ihandle* ih, const char* str, int *w, int *h)
|
|
{
|
|
int max_w = 0, line_count = 1;
|
|
IglFont* glfont;
|
|
|
|
if (!ih->handle)
|
|
{
|
|
iupdrvFontGetMultiLineStringSize(ih, str, w, h);
|
|
return;
|
|
}
|
|
|
|
glfont = iGLFontGet(ih);
|
|
if (!glfont)
|
|
{
|
|
if (w) *w = 0;
|
|
if (h) *h = 0;
|
|
return;
|
|
}
|
|
|
|
if (!str)
|
|
{
|
|
if (w) *w = 0;
|
|
if (h) *h = glfont->charheight * 1;
|
|
return;
|
|
}
|
|
|
|
if (str[0] && w)
|
|
{
|
|
int size;
|
|
int len;
|
|
const char *nextstr;
|
|
const char *curstr = str;
|
|
|
|
do
|
|
{
|
|
nextstr = iupStrNextLine(curstr, &len);
|
|
|
|
if (len)
|
|
{
|
|
iGLFontConvertToUTF8(curstr, len);
|
|
size = iupRound(ftglGetFontAdvance(glfont->ftgl_font, gl_utf8_buffer));
|
|
max_w = iupMAX(max_w, size);
|
|
}
|
|
|
|
if (*nextstr)
|
|
line_count++;
|
|
|
|
curstr = nextstr;
|
|
} while (*nextstr);
|
|
}
|
|
|
|
if (w) *w = max_w;
|
|
if (h) *h = glfont->charheight * line_count;
|
|
}
|
|
|
|
int iupGLFontSetFontAttrib(Ihandle* ih, const char* value)
|
|
{
|
|
IglFont* glfont;
|
|
|
|
if (!ih->handle)
|
|
return iupdrvSetFontAttrib(ih, value);
|
|
|
|
if (!iupdrvSetFontAttrib(ih, value))
|
|
return 0;
|
|
|
|
glfont = iGLFontCreateNativeFont(ih, value);
|
|
if (glfont)
|
|
{
|
|
/* If FONT is changed, must update the SIZE attribute */
|
|
iupBaseUpdateAttribFromFont(ih);
|
|
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void iupGLFontGetCharSize(Ihandle* ih, int *charwidth, int *charheight)
|
|
{
|
|
IglFont* glfont;
|
|
|
|
if (!ih->handle)
|
|
{
|
|
iupdrvFontGetCharSize(ih, charwidth, charheight);
|
|
return;
|
|
}
|
|
|
|
glfont = iGLFontGet(ih);
|
|
if (!glfont)
|
|
{
|
|
if (charwidth) *charwidth = 0;
|
|
if (charheight) *charheight = 0;
|
|
return;
|
|
}
|
|
|
|
if (charwidth) *charwidth = glfont->charwidth;
|
|
if (charheight) *charheight = glfont->charheight;
|
|
}
|
|
|
|
void iupGLFontGetDim(Ihandle* ih, int *maxwidth, int *height, int *ascent, int *descent)
|
|
{
|
|
IglFont* glfont;
|
|
|
|
if (!ih->handle)
|
|
return;
|
|
|
|
glfont = iGLFontGet(ih);
|
|
if (!glfont)
|
|
return;
|
|
|
|
if (maxwidth) *maxwidth = glfont->charwidth;
|
|
if (height) *height = glfont->charheight;
|
|
if (ascent) *ascent = iupRound(ftglGetFontAscender(glfont->ftgl_font));
|
|
if (descent) *descent = iupRound(-ftglGetFontDescender(glfont->ftgl_font));
|
|
}
|
|
|
|
void iupGLFontRenderString(Ihandle* ih, const char* str, int len)
|
|
{
|
|
IglFont* glfont;
|
|
|
|
if (!ih->handle)
|
|
return;
|
|
|
|
glfont = iGLFontGet(ih);
|
|
if (!glfont)
|
|
return;
|
|
|
|
iGLFontConvertToUTF8(str, len);
|
|
/* render always at baseline */
|
|
ftglRenderFont(glfont->ftgl_font, gl_utf8_buffer, FTGL_RENDER_ALL);
|
|
}
|
|
|
|
void iupGLFontInit(void)
|
|
{
|
|
#ifdef WIN32
|
|
if (!win_fonts)
|
|
winInitFontNames();
|
|
#endif
|
|
}
|
|
|
|
void iupGLFontRelease(Ihandle* gl_parent)
|
|
{
|
|
Iarray* gl_fonts = (Iarray*)iupAttribGet(gl_parent, "GL_FONTLIST");
|
|
if (gl_fonts)
|
|
{
|
|
int i, count = iupArrayCount(gl_fonts);
|
|
IglFont* fonts = (IglFont*)iupArrayGetData(gl_fonts);
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
ftglDestroyFont(fonts[i].ftgl_font);
|
|
fonts[i].ftgl_font = NULL;
|
|
}
|
|
iupArrayDestroy(gl_fonts);
|
|
iupAttribSet(gl_parent, "GL_FONTLIST", NULL);
|
|
}
|
|
}
|
|
|
|
void iupGLFontFinish(void)
|
|
{
|
|
if (gl_utf8_buffer)
|
|
{
|
|
free(gl_utf8_buffer);
|
|
gl_utf8_buffer = NULL;
|
|
gl_utf8_buffer_len = 0;
|
|
}
|
|
|
|
#ifdef WIN32
|
|
if (win_fonts)
|
|
free(win_fonts);
|
|
win_fonts = NULL;
|
|
win_fonts_count = 0;
|
|
#endif
|
|
}
|