Mercurial > otakunoraifu
diff font/font_peer_x11.cc @ 0:223b71206888
Initial import
author | thib |
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date | Fri, 01 Aug 2008 16:32:45 +0000 |
parents | |
children | 3a6aaeab7b4e |
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new file mode 100644 --- /dev/null +++ b/font/font_peer_x11.cc @@ -0,0 +1,420 @@ +/* + * Copyright (c) 2004 Kazunor "jagarl" Ueno + * Copyright (c) 2000, 2001 Yuki Sawada + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <stdlib.h> + +#include "font.h" +#include "font_peer.h" + +#if USE_X11 + +#include <sys/ipc.h> +#include <sys/shm.h> + +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <X11/extensions/XShm.h> +#include <stdio.h> +#include<iostream> + +#include<vector> +#include<map> +//#include<iostream> +#include<sstream> +#include <string> +#include <stdexcept> + +using namespace std; + +namespace XKFont { +inline int read_little_endian_int(const char* buf) { + const unsigned char *p = (const unsigned char *) buf; + return (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0]; +} + +/*********************************** +** +** Fontinfo / FontSetInfo +** +** fontset から特定 pixel size を持つ +** 別のfontsetを作成するためのクラス +*/ +struct FontInfo { + std::map<int, string> fontlist; + FontInfo(Display* display, const char* fontname_orig); + string Search(int pixsize); +}; +struct FontSetInfo { + std::vector<FontInfo*> fontlist; + FontSetInfo(Display* display, const char* fontset_orig); + string Search(int pixsize); + ~FontSetInfo(); +}; + + +/*********************************** +** +** Methods of Fontinfo / FontSetInfo +** +*/ +FontInfo::FontInfo(Display* display, const char* fontname_orig) { + /* フォントの大きさ関係の情報を消去 */ + int i; + char* fontname = new char[strlen(fontname_orig)+50]; + int minus_count = 0; bool is_skip = false; int fc = 0; + for (i=0; fontname_orig[i]!=0; i++) { + if (fontname_orig[i] == '-') { + minus_count++; + if (minus_count >= 7 && minus_count <= 12) { + fontname[fc++] = '-'; + fontname[fc++] = '*'; + is_skip = true; + } else { + is_skip = false; + } + } + if (! is_skip) fontname[fc++] = fontname_orig[i]; + } + /* フォント情報を得る */ + fontname[fc] = 0; + int count; + char** fontnamelist = XListFonts(display, fontname, 100, &count); + for (i=0; i<count; i++) { + char* curfont = fontnamelist[i]; + /* fontname から pixel size 情報を得る */ + int j; int minus_count = 0; + for (j=0; curfont[j] != 0; j++) { + if (curfont[j] == '-') minus_count++; + if (minus_count == 7) { + int pixsize = atoi(curfont+j+1); + if (fontlist.find(pixsize) == fontlist.end()) { + fontlist[pixsize] = string(curfont); + } + break; + } + } + } + /* 検索に失敗した場合、とりあえず fontname を入れておく */ + if (fontlist.find(0) == fontlist.end()) { + fontlist[0] = string(fontname); + } + XFreeFontNames(fontnamelist); + delete[] fontname; + return; +} +string FontInfo::Search(int pixsize) { + int i; + /* pixsize に近いフォントが(あれば)帰す */ + if (fontlist.find(pixsize) != fontlist.end()) return fontlist[pixsize]; + for (i=1; i<4; i++) { + if (fontlist.find(pixsize-i) != fontlist.end()) return fontlist[pixsize-i]; + if (fontlist.find(pixsize+i) != fontlist.end()) return fontlist[pixsize+i]; + } + /* 見つからない:fontlist[0] を加工して帰す */ + /* pt/xres/yres などのフィールドに '-0-' というのがあれば '-*-'に変換 + ** pixsize は与えられた pixsize にする + */ + string basefont_s = fontlist[0]; + const char* basefont = basefont_s.c_str(); + char* retfont = new char[strlen(basefont)+50]; + int minus_count = 0; int rc = 0; bool is_skip = false; + for (i=0; basefont[i] != 0; i++) { + if (basefont[i] == '-') { + minus_count++; + is_skip = false; + if (minus_count == 7) { + sprintf(retfont+rc, "-%d", pixsize); + rc = strlen(retfont); + is_skip = true; + } else if (minus_count > 7 && minus_count <= 12) { + if (basefont[i+1] == '0' && basefont[i+2] == '-') { + retfont[rc++]='-'; + retfont[rc++]='*'; + is_skip = true; + } + } + } + if (! is_skip) retfont[rc++] = basefont[i]; + } + retfont[rc] = 0; + string retfont_str = string(retfont); + delete[] retfont; + return retfont_str; +} + +FontSetInfo::FontSetInfo(Display* display, const char* fontset_orig) { + char* fontset = new char[strlen(fontset_orig)+1]; + strcpy(fontset, fontset_orig); + char* cur = fontset; + while(strchr(cur, ',')) { + char* font = cur; + cur = strchr(cur, ','); + *cur++ = '\0'; + fontlist.push_back(new FontInfo(display, font)); + } + fontlist.push_back(new FontInfo(display, cur)); + delete[] fontset; + return; +} +FontSetInfo::~FontSetInfo() { + std::vector<FontInfo*>::iterator it; + for (it=fontlist.begin(); it != fontlist.end(); it++) { + delete (*it); + } + return; +} +string FontSetInfo::Search(int pixsize) { + stringstream s; + std::vector<FontInfo*>::iterator it; + for (it=fontlist.begin(); it != fontlist.end(); it++) { + if (it != fontlist.begin()) s << ","; + s << (*it)->Search(pixsize); + } + s<<ends; + return string(s.str()); +} + +/**************************************** +** +** FontPeerX11 +*/ +Display* PeerX11::display = 0; +void PeerX11::InitDisplay(Display* _d) { + /* d = ((GdkWindowPrivate*)(top_window.gdkobj()))->xdisplay; */ + display = _d; +} + +void PeerX11::OpenDisplay(void) { + if (display) return; + + char* display_name = getenv("DISPLAY"); + if (display_name == 0) display_name = ":0"; + + display = XOpenDisplay(display_name); + + if (display == 0) { + string err = string("XKFont::PeerX11:OpenDisplay() : Cannot open X display ") + display_name; + throw std::invalid_argument(err); + } +} + +inline int MAX(int a, int b) { + if (a > b) return a; + else return b; +} + +PeerX11::PeerX11(const char* fontname, int index, int fontsize, int _vsize) : + fontset(0), gc(0), canvas(0), image(0), colortable(0) { + OpenDisplay(); + + int scr = DefaultScreen(display); + Window w = RootWindow(display, scr); + Colormap cmap = DefaultColormap(display, scr); + visual = DefaultVisual(display, scr); + + if (visual->c_class != TrueColor && visual->c_class != DirectColor) { + string err = "XKFont::PeerX11:PeerX11() : No supported Color mode of X : neither TrueColor nor DirectColor"; + throw std::runtime_error(err); + } + /* 色の初期化 */ + white = visual->red_mask | visual->green_mask | visual->blue_mask; + black = 0; + if (visual->green_mask == 0) { + string err = "XKFont::PeerX11:PeerX11() : Invalid Visual on X"; + throw std::runtime_error(err); + } + shift = 0; + mask = visual->green_mask; + while(mask & 0x01) { shift++; mask >>= 1; } + + int tablesize = mask+1; + colortable = new int[tablesize]; + int i; for (i=0; i< tablesize; i++) { + colortable[i] = i*255/tablesize; + } +XSupportsLocale(); + + /* font 読み込み */ + FontSetInfo fsinfo(display,fontname); + string fontset_name = fsinfo.Search(fontsize); + char** missing_cl; int missing_cc; char* def_s; +printf("fontset %s\n",fontset_name.c_str()); + fontset = XCreateFontSet(display, fontset_name.c_str(), &missing_cl, &missing_cc, &def_s); + + if (fontset == 0) { + delete[] colortable; + string err = string("XKFont::PeerX11:PeerX11() : Cannot create fontset "); + err += fontset_name; err += " (font name "; err += fontname; err += ")"; + throw std::invalid_argument(err); + } + + if (missing_cc != 0) { + cerr << "XKFont::PeerX11:PeerX11() : Cannot found some fonts in the fontset"<<endl; + cerr << " fontset: "<<fontset_name<<endl; + cerr << " not found fonts:"<<endl; + int i; for (i=0; i<missing_cc; i++) { + cerr << " " << missing_cl[i] << endl; + } + } + + XFontSetExtents* extents = XExtentsOfFontSet(fontset); + + width = extents->max_ink_extent.width; + height = extents->max_ink_extent.height; + + /* calculate ascent / descent */ + XFontStruct** font_structs; char** font_names; + int num_fonts = XFontsOfFontSet(fontset, &font_structs, &font_names); +printf("locale %s\n",XLocaleOfOM(XOMOfOC(fontset))); + + ascent = 0; + for (i=0; i<num_fonts; i++) { + ascent = MAX(ascent, font_structs[i]->ascent); + } + + /* 描画用の pixmap を作成 */ + XGCValues gc_values; unsigned int gc_values_mask; + gc_values.function = GXcopy; + gc_values.fill_style = FillSolid; + gc_values.arc_mode = ArcPieSlice; + gc_values.subwindow_mode = ClipByChildren; + gc_values.graphics_exposures = False; + gc_values.foreground = white; + gc_values.background = black; + gc_values_mask = GCFunction | GCFillStyle | GCArcMode | GCSubwindowMode | GCGraphicsExposures | GCForeground | GCBackground; + gc = XCreateGC(display, w, gc_values_mask, &gc_values); + + canvas = XCreatePixmap(display, w, width, height, DefaultDepth(display, scr)); + + /* イメージ転送用の image の作成 */ + int ignore; + use_shm = false; + if (XShmQueryExtension(display) == True) { + x_shm_info.shmid = -1; + x_shm_info.shmaddr = (char*)-1; + image = XShmCreateImage(display, visual, DefaultDepth(display, scr), ZPixmap, NULL, &x_shm_info, width, height); + if (image) { + x_shm_info.shmid = shmget(IPC_PRIVATE, image->bytes_per_line*image->height, IPC_CREAT | 0600); + if (x_shm_info.shmid == -1) { + XDestroyImage(image); + image = 0; + goto no_shm; + } + x_shm_info.readOnly = False; + x_shm_info.shmaddr = (char*) shmat(x_shm_info.shmid, 0, 0); + image->data = x_shm_info.shmaddr; + if (x_shm_info.shmaddr == (char*) -1) { + XDestroyImage(image); + shmctl(x_shm_info.shmid, IPC_RMID, 0); + image = 0; + goto no_shm; + } + XShmAttach(display, &x_shm_info); + XSync(display, False); + shmctl(x_shm_info.shmid, IPC_RMID, 0); + use_shm = true; + } + } +no_shm: + if (image == 0) { + use_shm = false; + image = XCreateImage(display, visual, DefaultDepth(display, scr), ZPixmap, 0, 0, width, height, 32, 0); + image->data = (char*)malloc(image->bytes_per_line * image->height); + if (image->data == 0) { + XDestroyImage(image); + image = 0; + throw bad_alloc(); + } + } +Glyph g; +GlyphCreate(0xa1a2,&g); +GlyphCreate(0xa4a3,&g); +} + +PeerX11::~PeerX11() { + if (display) { + if (fontset) XFreeFontSet(display, fontset); + if (gc) XFlushGC(display, gc); + if (canvas) XFreePixmap(display, canvas); + if (image) { + if (use_shm) XShmDetach(display, &x_shm_info); + XDestroyImage(image); + if (use_shm) shmdt(x_shm_info.shmaddr); + } + if (colortable) delete[] colortable; + } +} + +bool PeerX11::GlyphCreate(unsigned int code, Glyph* glyph) { + XRectangle ink, logic; + + char str[3]={0,0,0}; + + if ( (code>>8)&0xff){ + str[0]=code>>8; + str[1]=code & 0xff; + } else { + str[0]=code; + } + + XmbTextExtents(fontset, str, strlen(str),&ink,&logic); + int cwidth = logic.width; + XmbDrawImageString(display, canvas, fontset, gc, 0, -logic.y, str, strlen(str)); + if (use_shm) { + XShmGetImage(display, canvas, image, 0, 0, AllPlanes); + } else { + XGetSubImage(display, canvas, 0, 0, width, height, AllPlanes, ZPixmap, image, 0, 0); + } + XSync(display, False); + glyph->bitmap.buffer = new unsigned char[logic.width*logic.height]; + int i; + unsigned char* mem = (unsigned char*) image->data; + unsigned char* dest = glyph->bitmap.buffer; + int bpp = image->bytes_per_line/width; + int bpl = image->bytes_per_line; + for (i=0; i<logic.height; i++) { + unsigned char* m = mem; + int j; for (j=0; j<cwidth; j++) { + *dest = colortable[((read_little_endian_int((char*)m))>>shift) & mask]; + dest++; + m += bpp; + } + mem += bpl; + } + glyph->bitmap_left = logic.x; + glyph->bitmap_top = -logic.y; + glyph->bitmap.width = logic.width; + glyph->bitmap.rows = logic.height; + glyph->advance.x = logic.width + 1; + glyph->advance.y = logic.height+ 1; + + return true; +} +}; + +#endif /* USE_X11 */