summaryrefslogtreecommitdiff
path: root/src/FbTk/ImageImlib2.cc
blob: 82079a30387a3e76a9767c8563252cf575348a06 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
// ImageImlib2.cc for FbTk - Fluxbox ToolKit
// Copyright (c) 2004 Mathias Gumz <akira at fluxbox dot org>
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

// $Id:  $

#include "ImageImlib2.hh"

#include "App.hh"
#include "PixmapWithMask.hh"

#include <X11/xpm.h>

#include <Imlib2.h>
#include <map>

namespace {

typedef std::map<int, Imlib_Context> ScreenImlibContextContainer;
typedef ScreenImlibContextContainer::iterator ScreenImlibContext;

ScreenImlibContextContainer contexts;

}; // anon namespace


namespace FbTk {

ImageImlib2::ImageImlib2() {

    // lets have a 2mb cache inside imlib, holds
    // uncompressed images
    imlib_set_cache_size(2048 * 1024);

    // TODO: this are the potential candidates,
    //       choose only sane ones. open for discussion
    char* format_list[] = {
        "PNG",                               // pngloader
        "JPEG", "JPG", "JFI", "JFIF",        // jpegloader
//        "TIFF", "TIF",                       // tiffloader
        "PNM", "PPM", "PGM", "PBM", "PAM",   // pnmloader
//        "TGA",                               // tgaloader
//        "IFF", "ILBM", "LBM",                // lbmloader
//        "GIF",                               // gifloader
//        "ARGB", "AGR",                       // argbloader
//        "BMP",                               // bmploader
//        "BZ2",                               // bzloader
//        "GZ",                                // gzloader
        NULL
    };

    char** format = NULL;
    for(format = format_list; *format != NULL; format++) {
        Image::registerType(*format, *this);
    }
}

ImageImlib2::~ImageImlib2() {
    ScreenImlibContext it = contexts.begin();
    ScreenImlibContext it_end = contexts.end();
    for (; it != it_end; it++) {
        imlib_context_free(it->second);
    }
    contexts.clear();
}

PixmapWithMask *ImageImlib2::load(const std::string &filename, int screen_num) const {

    Display *dpy = FbTk::App::instance()->display();
    
    // init imlib2 if needed, the settings for each screen may differ
    ScreenImlibContext screen_context = contexts.find(screen_num);
    if (screen_context == contexts.end()) {

        Imlib_Context new_context = imlib_context_new();
        imlib_context_push(new_context);

        imlib_context_set_display(dpy);
        imlib_context_set_drawable(RootWindow(dpy, screen_num));
        imlib_context_set_colormap(DefaultColormap(dpy, screen_num));
        imlib_context_set_visual(DefaultVisual(dpy, screen_num));

        imlib_context_pop();

        contexts[screen_num] = new_context;
        screen_context = contexts.find(screen_num);
    }

    if (screen_context == contexts.end()) {
#ifdef DEBUG
        cerr << "ImageImlib2::load: error, couldnt find a valid Imlib_Context.\n";
#endif // DEBUG
        return 0;
    }

    // now load the stuff
    Imlib_Context context = screen_context->second;
    imlib_context_push(context);
    Imlib_Image image = imlib_load_image_immediately(filename.c_str());
    if (image) { // loading was ok
        imlib_context_set_image(image);

        Pixmap pm = 0, mask = 0;
        imlib_render_pixmaps_for_whole_image(&pm, &mask);
        
        // pm and mask belong to imlib, so we have to copy them
        FbPixmap fbpm;
        FbPixmap fbmask;

        fbpm.copy(pm);
        fbmask.copy(mask);

        // mark pm and mask as freeable in imlib
        imlib_free_image();
        imlib_free_pixmap_and_mask(pm);

        imlib_context_pop();

        PixmapWithMask* result = new PixmapWithMask();
        result->pixmap() = fbpm;
        result->mask() = fbmask;
        return result;
    }

    // loading failure
    imlib_context_pop();
    return 0;
}

} // end namespace FbTk