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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
/***************************************************************************
copyright : (C) 2003-2006 by Robby Stephenson
email : robby@periapsis.org
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of version 2 of the GNU General Public License as *
* published by the Free Software Foundation; *
* *
***************************************************************************/
#include "imagewidget.h"
#include "../imagefactory.h"
#include "../image.h"
#include "../filehandler.h"
#include "../tellico_debug.h"
#include "../tellico_utils.h"
#include <kfiledialog.h>
#include <klocale.h>
#include <kbuttonbox.h>
#include <kurldrag.h>
#include <kmessagebox.h>
#include <tqwmatrix.h>
#include <tqlayout.h>
#include <tqlabel.h>
#include <tqcheckbox.h>
#include <tqdragobject.h>
#include <tqapplication.h> // needed for drag distance
namespace {
static const uint IMAGE_WIDGET_BUTTON_MARGIN = 8;
static const uint IMAGE_WIDGET_IMAGE_MARGIN = 4;
static const uint MAX_UNSCALED_WIDTH = 640;
static const uint MAX_UNSCALED_HEIGHT = 640;
}
using Tellico::GUI::ImageWidget;
ImageWidget::ImageWidget(TQWidget* parent_, const char* name_) : TQWidget(parent_, name_) {
TQHBoxLayout* l = new TQHBoxLayout(this);
l->setMargin(IMAGE_WIDGET_BUTTON_MARGIN);
m_label = new TQLabel(this);
m_label->setSizePolicy(TQSizePolicy(TQSizePolicy::Ignored, TQSizePolicy::Ignored));
m_label->setFrameStyle(TQFrame::Panel | TQFrame::Sunken);
m_label->setAlignment(TQt::AlignHCenter | TQt::AlignVCenter);
l->addWidget(m_label, 1);
l->addSpacing(IMAGE_WIDGET_BUTTON_MARGIN);
TQVBoxLayout* boxLayout = new TQVBoxLayout(l);
boxLayout->addStretch(1);
KButtonBox* box = new KButtonBox(this,Qt::Vertical);
box->addButton(i18n("Select Image..."), TQT_TQOBJECT(this), TQT_SLOT(slotGetImage()));
box->addButton(i18n("Clear"), TQT_TQOBJECT(this), TQT_SLOT(slotClear()));
box->tqlayout();
boxLayout->addWidget(box);
boxLayout->addSpacing(8);
m_cbLinkOnly = new TQCheckBox(i18n("Save link only"), this);
connect(m_cbLinkOnly, TQT_SIGNAL(clicked()), TQT_SLOT(slotLinkOnlyClicked()));
boxLayout->addWidget(m_cbLinkOnly);
boxLayout->addStretch(1);
slotClear();
// accept image drops
setAcceptDrops(true);
}
void ImageWidget::setImage(const TQString& id_) {
if(id_.isEmpty()) {
slotClear();
return;
}
m_imageID = id_;
m_pixmap = ImageFactory::pixmap(id_, MAX_UNSCALED_WIDTH, MAX_UNSCALED_HEIGHT);
const bool link = ImageFactory::imageInfo(id_).linkOnly;
m_cbLinkOnly->setChecked(link);
m_cbLinkOnly->setEnabled(link);
// if we're using a link, then the original URL _is_ the id
m_originalURL = link ? id_ : KURL();
m_scaled = TQPixmap();
scale();
update();
}
void ImageWidget::setLinkOnlyChecked(bool link_) {
m_cbLinkOnly->setChecked(link_);
}
void ImageWidget::slotClear() {
// m_image = Data::Image();
m_imageID = TQString();
m_pixmap = TQPixmap();
m_scaled = m_pixmap;
m_originalURL = KURL();
m_label->setPixmap(m_scaled);
m_cbLinkOnly->setChecked(false);
m_cbLinkOnly->setEnabled(true);
update();
emit signalModified();
}
void ImageWidget::scale() {
int ww = m_label->width() - 2*IMAGE_WIDGET_IMAGE_MARGIN;
int wh = m_label->height() - 2*IMAGE_WIDGET_IMAGE_MARGIN;
int pw = m_pixmap.width();
int ph = m_pixmap.height();
if(ww < pw || wh < ph) {
int newWidth, newHeight;
if(pw*wh < ph*ww) {
newWidth = static_cast<int>(static_cast<double>(pw)*wh/static_cast<double>(ph));
newHeight = wh;
} else {
newWidth = ww;
newHeight = static_cast<int>(static_cast<double>(ph)*ww/static_cast<double>(pw));
}
TQWMatrix wm;
wm.scale(static_cast<double>(newWidth)/pw, static_cast<double>(newHeight)/ph);
m_scaled = m_pixmap.xForm(wm);
} else {
m_scaled = m_pixmap;
}
m_label->setPixmap(m_scaled);
}
void ImageWidget::resizeEvent(TQResizeEvent *) {
if(m_pixmap.isNull()) {
return;
}
scale();
update();
}
void ImageWidget::slotGetImage() {
KURL url = KFileDialog::getImageOpenURL(TQString(), this);
if(url.isEmpty() || !url.isValid()) {
return;
}
loadImage(url);
}
void ImageWidget::slotLinkOnlyClicked() {
if(m_imageID.isEmpty()) {
// nothing to do, it has an empty image;
return;
}
bool link = m_cbLinkOnly->isChecked();
// if the user is trying to link and can't before there's no information about the url
// the let him know that
if(link && m_originalURL.isEmpty()) {
KMessageBox::sorry(this, i18n("Saving a link is only possible for newly added images."));
m_cbLinkOnly->setChecked(false);
return;
}
// need to reset image id to be the original url
// if we're linking only, then we want the image id to be the same as the url
// so it needs to be added to the cache all over again
// probably could do this without downloading the image all over again,
// but I'm not going to do that right now
const TQString& id = ImageFactory::addImage(m_originalURL, false, KURL(), link);
// same image, so no need to call setImage
m_imageID = id;
emit signalModified();
}
void ImageWidget::mousePressEvent(TQMouseEvent* event_) {
// Only interested in LMB
if(event_->button() == Qt::LeftButton) {
// Store the position of the mouse press.
// check if position is inside the label
if(m_label->geometry().contains(event_->pos())) {
m_dragStart = event_->pos();
} else {
m_dragStart = TQPoint();
}
}
}
void ImageWidget::mouseMoveEvent(TQMouseEvent* event_) {
int delay = TQApplication::startDragDistance();
// Only interested in LMB
if(event_->state() & Qt::LeftButton) {
// only allow drag is the image is non-null, and the drag start point isn't null and the user dragged far enough
if(!m_imageID.isEmpty() && !m_dragStart.isNull() && (m_dragStart - event_->pos()).manhattanLength() > delay) {
const Data::Image& img = ImageFactory::imageById(m_imageID);
if(!img.isNull()) {
TQImageDrag* drag = new TQImageDrag(img, this);
drag->dragCopy();
}
}
}
}
void ImageWidget::dragEnterEvent(TQDragEnterEvent* event_) {
event_->accept(KURLDrag::canDecode(event_) || TQImageDrag::canDecode(event_) || TQTextDrag::canDecode(event_));
}
void ImageWidget::dropEvent(TQDropEvent* event_) {
TQImage image;
KURL::List urls;
TQString text;
GUI::CursorSaver cs(TQt::busyCursor);
if(TQImageDrag::decode(event_, image)) {
// TQt reads PNG data by default
const TQString& id = ImageFactory::addImage(image, TQString::fromLatin1("PNG"));
if(!id.isEmpty() && id != m_imageID) {
setImage(id);
emit signalModified();
}
} else if(KURLDrag::decode(event_, urls)) {
if(urls.isEmpty()) {
return;
}
// only care about the first one
const KURL& url = urls[0];
if(url.isEmpty() || !url.isValid()) {
return;
}
// kdDebug() << "ImageWidget::dropEvent() - " << url.prettyURL() << endl;
loadImage(url);
} else if(TQTextDrag::decode(event_, text)) {
KURL url(text);
if(url.isEmpty() || !url.isValid()) {
return;
}
loadImage(url);
}
}
void ImageWidget::loadImage(const KURL& url_) {
const bool link = m_cbLinkOnly->isChecked();
GUI::CursorSaver cs;
// if we're linking only, then we want the image id to be the same as the url
const TQString& id = ImageFactory::addImage(url_, false, KURL(), link);
if(id != m_imageID) {
setImage(id);
emit signalModified();
}
// at the end, cause setImage() resets it
m_originalURL = url_;
m_cbLinkOnly->setEnabled(true);
}
#include "imagewidget.moc"
|
