Temperature.app/Xpm.cc

   1 //
   2 //  Temperature.app
   3 //
   4 //  Copyright (c) 2000-2002 Per Liden
   5 //
   6 //  This program is free software; you can redistribute it and/or modify
   7 //  it under the terms of the GNU General Public License as published by
   8 //  the Free Software Foundation; either version 2 of the License, or
   9 //  (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307,
  19 //  USA.
  20 //
  21
  22 #include <X11/Xlib.h>
  23 #include <X11/xpm.h>
  24 #include <X11/extensions/shape.h>
  25 #include <iostream>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include "Temperature.h"
  29 #include "Xpm.h"
  30
  31 Xpm::Xpm(Display* display, Window root, char** data)
  32 {
  33    int error;
  34
  35    mDisplay = display;
  36
  37    mAttributes.valuemask = 0;
  38    error = XpmCreatePixmapFromData(mDisplay, root, data, &mImage, &mMask, &mAttributes);
  39
  40    switch (error) {
  41    case XpmColorError:
  42       std::cerr << APPNAME << ": xpm image loaded but did not get all colors needed" << std::endl;
  43       break;
  44
  45    case XpmColorFailed:
  46       std::cerr << APPNAME << ": could not load xpm image (not enough colors available)" << std::endl;
  47       exit(0);
  48       break;
  49
  50    case XpmNoMemory:
  51       std::cerr << APPNAME << ": could not load xpm image (not enough memory available)" << std::endl;
  52       exit(0);
  53       break;
  54
  55    case XpmOpenFailed:
  56    case XpmFileInvalid:
  57       std::cerr << APPNAME << ": could not load xpm image (image broken or corrupt)" << std::endl;
  58       exit(0);
  59       break;
  60
  61    case XpmSuccess:
  62    default:
  63       // Image loaded ok
  64       break;
  65    }
  66 }
  67
  68 Xpm::~Xpm()
  69 {
  70    if (mImage) {
  71       XFreePixmap(mDisplay, mImage);
  72    }
  73
  74    if (mMask) {
  75       XFreePixmap(mDisplay, mMask);
  76    }
  77 }
  78
  79 void Xpm::setWindowPixmap(Window win)
  80 {
  81    XResizeWindow(mDisplay, win, mAttributes.width, mAttributes.height);
  82    XSetWindowBackgroundPixmap(mDisplay, win, mImage);
  83    XClearWindow(mDisplay, win);
  84 }
  85
  86 void Xpm::setWindowPixmapShaped(Window win)
  87 {
  88    XResizeWindow(mDisplay, win, mAttributes.width, mAttributes.height);
  89    XSetWindowBackgroundPixmap(mDisplay, win, mImage);
  90    XShapeCombineMask(mDisplay, win, ShapeBounding, 0, 0, mMask, ShapeSet);
  91    XClearWindow(mDisplay, win);
  92 }
  93
  94 void Xpm::drawString(int pos, char* font, char* str)
  95 {
  96    XFontStruct* fontStruct;
  97    GC           gc;
  98    XGCValues    gcv;
  99
 100    if ((fontStruct = XLoadQueryFont(mDisplay, font)) == 0) {
 101       cerr << APPNAME << ": could not load font '" << font << "'" << endl;
 102       exit(0);
 103    }
 104
 105    gcv.foreground = WhitePixel(mDisplay, DefaultScreen(mDisplay));
 106    gc = XCreateGC(mDisplay, mImage, GCForeground, &gcv);
 107
 108    int strLength = strlen(str);
 109    int strWidth = XTextWidth(fontStruct, str, strLength);
 110
 111    int x = (64 / 2) - (strWidth / 2);
 112    XSetFont(mDisplay, gc, fontStruct->fid);
 113    XDrawString(mDisplay, mImage, gc, x, pos, str, strLength);
 114
 115    XFreeGC(mDisplay, gc);
 116    XFreeFont(mDisplay, fontStruct);
 117 }
 118
 119 void Xpm::drawComposedString(int pos, char* font1, char* str1, char* font2, char* str2)
 120 {
 121    XFontStruct* fontStruct1;
 122    XFontStruct* fontStruct2;
 123    GC           gc;
 124    XGCValues    gcv;
 125
 126    if ((fontStruct1 = XLoadQueryFont(mDisplay, font1)) == 0) {
 127       cerr << APPNAME << ": could not load font '" << font1 << "'" << endl;
 128       exit(0);
 129    }
 130
 131    if ((fontStruct2 = XLoadQueryFont(mDisplay, font2)) == 0) {
 132       cerr << APPNAME << ": could not load font '" << font2 << "'" << endl;
 133       exit(0);
 134    }
 135
 136    gcv.foreground = WhitePixel(mDisplay, DefaultScreen(mDisplay));
 137    gc = XCreateGC(mDisplay, mImage, GCForeground, &gcv);
 138
 139    int str1Length = strlen(str1);
 140    int str1Width = XTextWidth(fontStruct1, str1, str1Length);
 141    int str2Length = strlen(str2);
 142    int str2Width = XTextWidth(fontStruct2, str2, str2Length);
 143
 144    int x = (64 / 2) - ((str1Width + str2Width) / 2);
 145    XSetFont(mDisplay, gc, fontStruct1->fid);
 146    XDrawString(mDisplay, mImage, gc, x, pos, str1, str1Length);
 147
 148    x += str1Width;
 149    XSetFont(mDisplay, gc, fontStruct2->fid);
 150    XDrawString(mDisplay, mImage, gc, x, pos, str2, str2Length);
 151
 152    XFreeGC(mDisplay, gc);
 153    XFreeFont(mDisplay, fontStruct1);
 154    XFreeFont(mDisplay, fontStruct2);
 155 }