1 /*
2 Progressive image displaying library.
3
4 Copyright (C) 2004,2005 Maks Orlovich (maksim@kde.org)
5
6 Permission is hereby granted, free of charge, to any person obtaining a copy
7 of this software and associated documentation files (the "Software"), to deal
8 in the Software without restriction, including without limitation the rights
9 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 copies of the Software, and to permit persons to whom the Software is
11 furnished to do so, subject to the following conditions:
12
13 The above copyright notice and this permission notice shall be included in
14 all copies or substantial portions of the Software.
15
16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
20 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22
23 */
24
25 #include "imagepainter.h"
26 #include "image.h"
27 #include "pixmapplane.h"
28 #include "imagemanager.h"
29
30 namespace khtmlImLoad
31 {
32
ImagePainter(Image * _image)33 ImagePainter::ImagePainter(Image *_image): image(_image), sizeRefd(false)
34 {
35 //No need to ref, default size.
36 size = image->size();
37 }
38
ImagePainter(Image * _image,QSize _size)39 ImagePainter::ImagePainter(Image *_image, QSize _size): image(_image), size(_size), sizeRefd(false)
40 {
41 if (!ImageManager::isAcceptableScaleSize(_size.width(), _size.height())) {
42 setDefaultSize();
43 }
44 }
45
~ImagePainter()46 ImagePainter::~ImagePainter()
47 {
48 if (sizeRefd) {
49 image->derefSize(size);
50 }
51 }
52
ImagePainter(const ImagePainter & src)53 ImagePainter::ImagePainter(const ImagePainter &src)
54 {
55 image = src.image;
56 size = src.size;
57 sizeRefd = false;
58 }
59
operator =(const ImagePainter & src)60 ImagePainter &ImagePainter::operator=(const ImagePainter &src)
61 {
62 if (sizeRefd) {
63 image->derefSize(size);
64 }
65 image = src.image;
66 size = src.size;
67 sizeRefd = false;
68 return *this;
69 }
70
setSize(QSize _size)71 void ImagePainter::setSize(QSize _size)
72 {
73 if (!ImageManager::isAcceptableScaleSize(_size.width(), _size.height())) {
74 setDefaultSize();
75 return;
76 }
77
78 // Don't do anything if size didn't change,
79 // to avoid dropping the image..
80 if (size == _size) {
81 return;
82 }
83
84 if (sizeRefd) {
85 image->derefSize(size);
86 }
87 size = _size;
88 sizeRefd = false;
89 }
90
setDefaultSize()91 void ImagePainter::setDefaultSize()
92 {
93 if (sizeRefd) {
94 image->derefSize(size);
95 }
96 size = image->size();
97 sizeRefd = false;
98 }
99
paint(int dx,int dy,QPainter * p,int sx,int sy,int width,int height)100 void ImagePainter::paint(int dx, int dy, QPainter *p, int sx, int sy,
101 int width, int height)
102 {
103 if (!image->mayPaint())
104 // ### fallback painting in case bg?
105 {
106 return;
107 }
108
109 // Do our lazy ref if needed. Safe due to above
110 if (!sizeRefd && size != image->size()) {
111 image->refSize(size);
112 sizeRefd = true;
113 }
114
115 PixmapPlane *plane = image->getSize(size);
116
117 if (plane->animProvider) {
118 // Clip the request ourselves when animating..
119
120 if (width == -1) {
121 width = size.width();
122 }
123 if (height == -1) {
124 height = size.height();
125 }
126
127 QRect clippedRect = QRect(0, 0, size.width(), size.height())
128 & QRect(sx, sy, width, height);
129 plane->animProvider->paint(dx, dy, p, clippedRect.x(), clippedRect.y(),
130 clippedRect.width(), clippedRect.height());
131 return;
132 }
133
134 // non-animated, go straight to PixmapPlane; it clips itself
135 plane->paint(dx, dy, p, sx, sy, width, height);
136 }
137
138 }
139
140