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comparison Framework/Widgets/LayoutWidget.cpp @ 0:351ab0da0150

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 14 Oct 2016 15:34:11 +0200
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1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 *
6 * This program is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, either version 3 of the
9 * License, or (at your option) any later version.
10 *
11 * In addition, as a special exception, the copyright holders of this
12 * program give permission to link the code of its release with the
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
14 * that use the same license as the "OpenSSL" library), and distribute
15 * the linked executables. You must obey the GNU General Public License
16 * in all respects for all of the code used other than "OpenSSL". If you
17 * modify file(s) with this exception, you may extend this exception to
18 * your version of the file(s), but you are not obligated to do so. If
19 * you do not wish to do so, delete this exception statement from your
20 * version. If you delete this exception statement from all source files
21 * in the program, then also delete it here.
22 *
23 * This program is distributed in the hope that it will be useful, but
24 * WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
30 **/
31
32
33 #include "LayoutWidget.h"
34
35 #include "../Orthanc/Core/Logging.h"
36 #include "../Orthanc/Core/OrthancException.h"
37
38 #include <boost/math/special_functions/round.hpp>
39
40 namespace OrthancStone
41 {
42 class LayoutWidget::LayoutMouseTracker : public IMouseTracker
43 {
44 private:
45 std::auto_ptr<IMouseTracker> tracker_;
46 int left_;
47 int top_;
48 unsigned int width_;
49 unsigned int height_;
50
51 public:
52 LayoutMouseTracker(IMouseTracker* tracker,
53 int left,
54 int top,
55 unsigned int width,
56 unsigned int height) :
57 tracker_(tracker),
58 left_(left),
59 top_(top),
60 width_(width),
61 height_(height)
62 {
63 if (tracker == NULL)
64 {
65 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
66 }
67 }
68
69 virtual void Render(Orthanc::ImageAccessor& surface)
70 {
71 Orthanc::ImageAccessor accessor = surface.GetRegion(left_, top_, width_, height_);
72 tracker_->Render(accessor);
73 }
74
75 virtual void MouseUp()
76 {
77 tracker_->MouseUp();
78 }
79
80 virtual void MouseMove(int x,
81 int y)
82 {
83 tracker_->MouseMove(x - left_, y - top_);
84 }
85 };
86
87
88 class LayoutWidget::ChildWidget : public boost::noncopyable
89 {
90 private:
91 std::auto_ptr<IWidget> widget_;
92 int left_;
93 int top_;
94 unsigned int width_;
95 unsigned int height_;
96
97 public:
98 ChildWidget(IWidget* widget) :
99 widget_(widget)
100 {
101 assert(widget != NULL);
102 SetEmpty();
103 }
104
105 IWidget& GetWidget() const
106 {
107 return *widget_;
108 }
109
110 void SetRectangle(unsigned int left,
111 unsigned int top,
112 unsigned int width,
113 unsigned int height)
114 {
115 left_ = left;
116 top_ = top;
117 width_ = width;
118 height_ = height;
119
120 widget_->SetSize(width, height);
121 }
122
123 void SetEmpty()
124 {
125 SetRectangle(0, 0, 0, 0);
126 }
127
128 bool Contains(int x,
129 int y) const
130 {
131 return (x >= left_ &&
132 y >= top_ &&
133 x < left_ + static_cast<int>(width_) &&
134 y < top_ + static_cast<int>(height_));
135 }
136
137 bool Render(Orthanc::ImageAccessor& target)
138 {
139 if (width_ == 0 ||
140 height_ == 0)
141 {
142 return true;
143 }
144 else
145 {
146 Orthanc::ImageAccessor accessor = target.GetRegion(left_, top_, width_, height_);
147 return widget_->Render(accessor);
148 }
149 }
150
151 IMouseTracker* CreateMouseTracker(MouseButton button,
152 int x,
153 int y,
154 KeyboardModifiers modifiers)
155 {
156 if (Contains(x, y))
157 {
158 IMouseTracker* tracker = widget_->CreateMouseTracker(button,
159 x - left_,
160 y - top_,
161 modifiers);
162 if (tracker)
163 {
164 return new LayoutMouseTracker(tracker, left_, top_, width_, height_);
165 }
166 }
167
168 return NULL;
169 }
170
171 void RenderMouseOver(Orthanc::ImageAccessor& target,
172 int x,
173 int y)
174 {
175 if (Contains(x, y))
176 {
177 Orthanc::ImageAccessor accessor = target.GetRegion(left_, top_, width_, height_);
178
179 widget_->RenderMouseOver(accessor, x - left_, y - top_);
180 }
181 }
182
183 void MouseWheel(MouseWheelDirection direction,
184 int x,
185 int y,
186 KeyboardModifiers modifiers)
187 {
188 if (Contains(x, y))
189 {
190 widget_->MouseWheel(direction, x - left_, y - top_, modifiers);
191 }
192 }
193 };
194
195
196 void LayoutWidget::ComputeChildrenExtents()
197 {
198 if (children_.size() == 0)
199 {
200 return;
201 }
202
203 float internal = static_cast<float>(paddingInternal_);
204
205 if (width_ <= paddingLeft_ + paddingRight_ ||
206 height_ <= paddingTop_ + paddingBottom_)
207 {
208 for (size_t i = 0; i < children_.size(); i++)
209 {
210 children_[i]->SetEmpty();
211 }
212 }
213 else if (isHorizontal_)
214 {
215 unsigned int padding = paddingLeft_ + paddingRight_ + (children_.size() - 1) * paddingInternal_;
216 float childWidth = ((static_cast<float>(width_) - static_cast<float>(padding)) /
217 static_cast<float>(children_.size()));
218
219 for (size_t i = 0; i < children_.size(); i++)
220 {
221 float left = static_cast<float>(paddingLeft_) + static_cast<float>(i) * (childWidth + internal);
222 float right = left + childWidth;
223
224 if (left >= right)
225 {
226 children_[i]->SetEmpty();
227 }
228 else
229 {
230 children_[i]->SetRectangle(static_cast<unsigned int>(left),
231 paddingTop_,
232 boost::math::iround(right - left),
233 height_ - paddingTop_ - paddingBottom_);
234 }
235 }
236 }
237 else
238 {
239 unsigned int padding = paddingTop_ + paddingBottom_ + (children_.size() - 1) * paddingInternal_;
240 float childHeight = ((static_cast<float>(height_) - static_cast<float>(padding)) /
241 static_cast<float>(children_.size()));
242
243 for (size_t i = 0; i < children_.size(); i++)
244 {
245 float top = static_cast<float>(paddingTop_) + static_cast<float>(i) * (childHeight + internal);
246 float bottom = top + childHeight;
247
248 if (top >= bottom)
249 {
250 children_[i]->SetEmpty();
251 }
252 else
253 {
254 children_[i]->SetRectangle(paddingTop_,
255 static_cast<unsigned int>(top),
256 width_ - paddingLeft_ - paddingRight_,
257 boost::math::iround(bottom - top));
258 }
259 }
260 }
261
262 NotifyChange(*this);
263 }
264
265
266 void LayoutWidget::UpdateStep()
267 {
268 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
269 }
270
271
272 LayoutWidget::LayoutWidget() :
273 isHorizontal_(true),
274 started_(false),
275 width_(0),
276 height_(0),
277 paddingLeft_(0),
278 paddingTop_(0),
279 paddingRight_(0),
280 paddingBottom_(0),
281 paddingInternal_(0)
282 {
283 }
284
285
286 LayoutWidget::~LayoutWidget()
287 {
288 for (size_t i = 0; i < children_.size(); i++)
289 {
290 children_[i]->GetWidget().Unregister(*this);
291 delete children_[i];
292 }
293 }
294
295
296 void LayoutWidget::NotifyChange(const IWidget& widget)
297 {
298 // One of the children has changed
299 WidgetBase::NotifyChange();
300 }
301
302
303 void LayoutWidget::SetHorizontal()
304 {
305 isHorizontal_ = true;
306 ComputeChildrenExtents();
307 }
308
309
310 void LayoutWidget::SetVertical()
311 {
312 isHorizontal_ = false;
313 ComputeChildrenExtents();
314 }
315
316
317 void LayoutWidget::SetPadding(unsigned int left,
318 unsigned int top,
319 unsigned int right,
320 unsigned int bottom,
321 unsigned int spacing)
322 {
323 paddingLeft_ = left;
324 paddingTop_ = top;
325 paddingRight_ = right;
326 paddingBottom_ = bottom;
327 paddingInternal_ = spacing;
328 }
329
330
331 void LayoutWidget::SetPadding(unsigned int padding)
332 {
333 paddingLeft_ = padding;
334 paddingTop_ = padding;
335 paddingRight_ = padding;
336 paddingBottom_ = padding;
337 paddingInternal_ = padding;
338 }
339
340
341 IWidget& LayoutWidget::AddWidget(IWidget* widget) // Takes ownership
342 {
343 if (started_)
344 {
345 LOG(ERROR) << "Cannot add child once Start() has been invoked";
346 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
347 }
348
349 if (widget == NULL)
350 {
351 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
352 }
353
354 if (GetStatusBar() != NULL)
355 {
356 widget->SetStatusBar(*GetStatusBar());
357 }
358 else
359 {
360 widget->ResetStatusBar();
361 }
362
363 children_.push_back(new ChildWidget(widget));
364 widget->Register(*this);
365
366 ComputeChildrenExtents();
367
368 return *widget;
369 }
370
371
372 void LayoutWidget::SetStatusBar(IStatusBar& statusBar)
373 {
374 WidgetBase::SetStatusBar(statusBar);
375
376 for (size_t i = 0; i < children_.size(); i++)
377 {
378 children_[i]->GetWidget().SetStatusBar(statusBar);
379 }
380 }
381
382
383 void LayoutWidget::ResetStatusBar()
384 {
385 WidgetBase::ResetStatusBar();
386
387 for (size_t i = 0; i < children_.size(); i++)
388 {
389 children_[i]->GetWidget().ResetStatusBar();
390 }
391 }
392
393
394 void LayoutWidget::Start()
395 {
396 for (size_t i = 0; i < children_.size(); i++)
397 {
398 children_[i]->GetWidget().Start();
399 }
400
401 WidgetBase::Start();
402 }
403
404
405 void LayoutWidget::Stop()
406 {
407 WidgetBase::Stop();
408
409 for (size_t i = 0; i < children_.size(); i++)
410 {
411 children_[i]->GetWidget().Stop();
412 }
413 }
414
415
416 void LayoutWidget::SetSize(unsigned int width,
417 unsigned int height)
418 {
419 width_ = width;
420 height_ = height;
421 ComputeChildrenExtents();
422 }
423
424
425 bool LayoutWidget::Render(Orthanc::ImageAccessor& surface)
426 {
427 if (!WidgetBase::Render(surface))
428 {
429 return false;
430 }
431
432 for (size_t i = 0; i < children_.size(); i++)
433 {
434 if (!children_[i]->Render(surface))
435 {
436 return false;
437 }
438 }
439
440 return true;
441 }
442
443
444 IMouseTracker* LayoutWidget::CreateMouseTracker(MouseButton button,
445 int x,
446 int y,
447 KeyboardModifiers modifiers)
448 {
449 for (size_t i = 0; i < children_.size(); i++)
450 {
451 IMouseTracker* tracker = children_[i]->CreateMouseTracker(button, x, y, modifiers);
452 if (tracker != NULL)
453 {
454 return tracker;
455 }
456 }
457
458 return NULL;
459 }
460
461
462 void LayoutWidget::RenderMouseOver(Orthanc::ImageAccessor& target,
463 int x,
464 int y)
465 {
466 for (size_t i = 0; i < children_.size(); i++)
467 {
468 children_[i]->RenderMouseOver(target, x, y);
469 }
470 }
471
472
473 void LayoutWidget::MouseWheel(MouseWheelDirection direction,
474 int x,
475 int y,
476 KeyboardModifiers modifiers)
477 {
478 for (size_t i = 0; i < children_.size(); i++)
479 {
480 children_[i]->MouseWheel(direction, x, y, modifiers);
481 }
482 }
483
484
485 void LayoutWidget::KeyPressed(char key,
486 KeyboardModifiers modifiers)
487 {
488 for (size_t i = 0; i < children_.size(); i++)
489 {
490 children_[i]->GetWidget().KeyPressed(key, modifiers);
491 }
492 }
493 }