Differential D25543 Diff 70339 kstyle/widgets/pushbutton.cpp

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kstyle/widgets/pushbutton.cpp

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1​#include "breezestyle.h"
2​
3​namespace Breeze
4​{
5​//____________________________________________________________________
6​QColor Helper::buttonFocusOutlineColor(const QPalette &palette) const
7​{
8​ return KColorUtils::mix(focusColor(palette), palette.color(QPalette::ButtonText), 0.15);
9​}
10​
11​//____________________________________________________________________
12​QColor Helper::buttonHoverOutlineColor(const QPalette &palette) const
13​{
14​ return KColorUtils::mix(hoverColor(palette), palette.color(QPalette::ButtonText), 0.15);
15​}
16​
17​//____________________________________________________________________
18​QColor Helper::buttonOutlineColor(const QPalette &palette, bool mouseOver, bool hasFocus, qreal opacity, AnimationMode mode) const
19​{
20​ QColor outline(KColorUtils::mix(palette.color(QPalette::Button), palette.color(QPalette::ButtonText), 0.3));
21​ if (mode == AnimationHover) {
22​ if (hasFocus) {
23​ const QColor focus(buttonFocusOutlineColor(palette));
24​ const QColor hover(buttonHoverOutlineColor(palette));
25​ outline = KColorUtils::mix(focus, hover, opacity);
26​
27​ } else {
28​ const QColor hover(hoverColor(palette));
29​ outline = KColorUtils::mix(outline, hover, opacity);
30​ }
31​
32​ } else if (mouseOver) {
33​ if (hasFocus)
34​ outline = buttonHoverOutlineColor(palette);
35​ else
36​ outline = hoverColor(palette);
37​
38​ } else if (mode == AnimationFocus) {
39​ const QColor focus(buttonFocusOutlineColor(palette));
40​ outline = KColorUtils::mix(outline, focus, opacity);
41​
42​ } else if (hasFocus) {
43​ outline = buttonFocusOutlineColor(palette);
44​ }
45​
46​ return outline;
47​}
48​
49​//____________________________________________________________________
50​QColor Helper::buttonBackgroundColor(const QPalette &palette, bool mouseOver, bool hasFocus, bool sunken, qreal opacity, AnimationMode mode) const
51​{
52​ QColor background(sunken ? KColorUtils::mix(palette.color(QPalette::Button), palette.color(QPalette::ButtonText), 0.2) : palette.color(QPalette::Button));
53​
54​ if (mode == AnimationHover) {
55​ const QColor focus(focusColor(palette));
56​ const QColor hover(hoverColor(palette));
57​ if (hasFocus)
58​ background = KColorUtils::mix(focus, hover, opacity);
59​
60​ } else if (mouseOver && hasFocus) {
61​ background = hoverColor(palette);
62​
63​ } else if (mode == AnimationFocus) {
64​ const QColor focus(focusColor(palette));
65​ background = KColorUtils::mix(background, focus, opacity);
66​
67​ } else if (hasFocus) {
68​ background = focusColor(palette);
69​ }
70​
71​ return background;
72​}
73​
74​//______________________________________________________________________________
75​void Helper::renderButtonFrame(QPainter *painter, const QRect &rect, const QColor &color, const QColor &outline, const QColor &shadow, bool hasFocus, bool sunken) const
76​{
77​ // setup painter
78​ painter->setRenderHint(QPainter::Antialiasing, true);
79​
80​ // copy rect
81​ QRectF frameRect(rect);
82​ frameRect.adjust(1, 1, -1, -1);
83​ qreal radius(frameRadius());
84​
85​ // shadow
86​ if (sunken) {
87​ frameRect.translate(1, 1);
88​
89​ } else if (shadow.isValid()) {
90​ const qreal shadowRadius = qMax(radius - 1, qreal(0.0));
91​ painter->setPen(QPen(shadow, 2));
92​ painter->setBrush(Qt::NoBrush);
93​ painter->drawRoundedRect(shadowRect(frameRect), shadowRadius, shadowRadius);
94​ }
95​
96​ if (outline.isValid()) {
97​ QLinearGradient gradient(frameRect.topLeft(), frameRect.bottomLeft());
98​ gradient.setColorAt(0, outline.lighter(hasFocus ? 103 : 101));
99​ gradient.setColorAt(1, outline.darker(hasFocus ? 110 : 103));
100​ painter->setPen(QPen(QBrush(gradient), 1.0));
101​
102​ frameRect.adjust(0.5, 0.5, -0.5, -0.5);
103​ radius = qMax(radius - 1, qreal(0.0));
104​
105​ } else
106​ painter->setPen(Qt::NoPen);
107​
108​ // content
109​ if (color.isValid()) {
110​ QLinearGradient gradient(frameRect.topLeft(), frameRect.bottomLeft());
111​ gradient.setColorAt(0, color.lighter(hasFocus ? 103 : 101));
112​ gradient.setColorAt(1, color.darker(hasFocus ? 110 : 103));
113​ painter->setBrush(gradient);
114​
115​ } else
116​ painter->setBrush(Qt::NoBrush);
117​
118​ // render
119​ painter->drawRoundedRect(frameRect, radius, radius);
120​}
121​
122​//____________________________________________________________________________
123​#if QT_VERSION >= 0x050000
124​bool Style::eventFilterCommandLinkButton(QCommandLinkButton *button, QEvent *event)
125​{
126​ if (event->type() == QEvent::Paint) {
127​ // painter
128​ QPainter painter(button);
129​ painter.setClipRegion(static_cast<QPaintEvent *>(event)->region());
130​
131​ const bool isFlat = false;
132​
133​ // option
134​ QStyleOptionButton option;
135​ option.initFrom(button);
136​ option.features |= QStyleOptionButton::CommandLinkButton;
137​ if (isFlat)
138​ option.features |= QStyleOptionButton::Flat;
139​ option.text = QString();
140​ option.icon = QIcon();
141​
142​ if (button->isChecked())
143​ option.state |= State_On;
144​ if (button->isDown())
145​ option.state |= State_Sunken;
146​
147​ // frame
148​ drawControl(QStyle::CE_PushButton, &option, &painter, button);
149​
150​ // offset
151​ const int margin(Metrics::Button_MarginWidth + Metrics::Frame_FrameWidth);
152​ QPoint offset(margin, margin);
153​
154​ if (button->isDown() && !isFlat)
155​ painter.translate(1, 1);
156​ {
157​ offset += QPoint(1, 1);
158​ }
159​
160​ // state
161​ const State &state(option.state);
162​ const bool enabled(state & State_Enabled);
163​ bool mouseOver(enabled && (state & State_MouseOver));
164​ bool hasFocus(enabled && (state & State_HasFocus));
165​
166​ // icon
167​ if (!button->icon().isNull()) {
168​ const auto pixmapSize(button->icon().actualSize(button->iconSize()));
169​ const QRect pixmapRect(QPoint(offset.x(), button->description().isEmpty() ? (button->height() - pixmapSize.height()) / 2 : offset.y()), pixmapSize);
170​ const QPixmap pixmap(button->icon().pixmap(pixmapSize, enabled ? QIcon::Normal : QIcon::Disabled, button->isChecked() ? QIcon::On : QIcon::Off));
171​ drawItemPixmap(&painter, pixmapRect, Qt::AlignCenter, pixmap);
172​
173​ offset.rx() += pixmapSize.width() + Metrics::Button_ItemSpacing;
174​ }
175​
176​ // text rect
177​ QRect textRect(offset, QSize(button->size().width() - offset.x() - margin, button->size().height() - 2 * margin));
178​ const QPalette::ColorRole textRole = (enabled && hasFocus && !mouseOver && !isFlat) ? QPalette::HighlightedText : QPalette::ButtonText;
179​ if (!button->text().isEmpty()) {
180​ QFont font(button->font());
181​ font.setBold(true);
182​ painter.setFont(font);
183​ if (button->description().isEmpty()) {
184​ drawItemText(&painter, textRect, Qt::AlignLeft | Qt::AlignVCenter | Qt::TextHideMnemonic, button->palette(), enabled, button->text(), textRole);
185​
186​ } else {
187​ drawItemText(&painter, textRect, Qt::AlignLeft | Qt::AlignTop | Qt::TextHideMnemonic, button->palette(), enabled, button->text(), textRole);
188​ textRect.setTop(textRect.top() + QFontMetrics(font).height());
189​ }
190​
191​ painter.setFont(button->font());
192​ }
193​
194​ if (!button->description().isEmpty()) {
195​ drawItemText(&painter, textRect, Qt::AlignLeft | Qt::AlignVCenter | Qt::TextWordWrap, button->palette(), enabled, button->description(), textRole);
196​ }
197​
198​ return true;
199​ }
200​
201​ // continue with normal painting
202​ return false;
203​}
204​#endif
205​
206​//___________________________________________________________________________________________________________________
207​QRect Style::pushButtonContentsRect(const QStyleOption *option, const QWidget *) const
208​{
209​ return insideMargin(option->rect, Metrics::Frame_FrameWidth);
210​}
211​
212​//______________________________________________________________
213​QSize Style::pushButtonSizeFromContents(const QStyleOption *option, const QSize &contentsSize, const QWidget *widget) const
214​{
215​ // cast option and check
216​ const auto buttonOption(qstyleoption_cast<const QStyleOptionButton *>(option));
217​ if (!buttonOption)
218​ return contentsSize;
219​
220​ // output
221​ QSize size;
222​
223​ // check text and icon
224​ const bool hasText(!buttonOption->text.isEmpty());
225​ const bool flat(buttonOption->features & QStyleOptionButton::Flat);
226​ bool hasIcon(!buttonOption->icon.isNull());
227​
228​ if (!(hasText || hasIcon)) {
229​ /*
230​ no text nor icon is passed.
231​ assume custom button and use contentsSize as a starting point
232​ */
233​ size = contentsSize;
234​
235​ } else {
236​ /*
237​ rather than trying to guess what Qt puts into its contents size calculation,
238​ we recompute the button size entirely, based on button option
239​ this ensures consistency with the rendering stage
240​ */
241​
242​ // update has icon to honour showIconsOnPushButtons, when possible
243​ hasIcon &= (showIconsOnPushButtons() || flat || !hasText);
244​
245​ // text
246​ if (hasText)
247​ size = buttonOption->fontMetrics.size(Qt::TextShowMnemonic, buttonOption->text);
248​
249​ // icon
250​ if (hasIcon) {
251​ QSize iconSize = buttonOption->iconSize;
252​ if (!iconSize.isValid())
253​ iconSize = QSize(pixelMetric(PM_SmallIconSize, option, widget), pixelMetric(PM_SmallIconSize, option, widget));
254​
255​ size.setHeight(qMax(size.height(), iconSize.height()));
256​ size.rwidth() += iconSize.width();
257​
258​ if (hasText)
259​ size.rwidth() += Metrics::Button_ItemSpacing;
260​ }
261​ }
262​
263​ // menu
264​ const bool hasMenu(buttonOption->features & QStyleOptionButton::HasMenu);
265​ if (hasMenu) {
266​ size.rwidth() += Metrics::MenuButton_IndicatorWidth;
267​ if (hasText || hasIcon)
268​ size.rwidth() += Metrics::Button_ItemSpacing;
269​ }
270​
271​ // expand with buttons margin
272​ size = expandSize(size, Metrics::Button_MarginWidth);
273​
274​ // make sure buttons have a minimum width
275​ if (hasText) {
276​ size.setWidth(qMax(size.width(), int(Metrics::Button_MinWidth)));
277​ }
278​
279​ // finally add frame margins
280​ return expandSize(size, Metrics::Frame_FrameWidth);
281​}
282​
283​//______________________________________________________________
284​bool Style::drawPanelButtonCommandPrimitive(const QStyleOption *option, QPainter *painter, const QWidget *widget) const
285​{
286​ // cast option and check
287​ const auto buttonOption(qstyleoption_cast<const QStyleOptionButton *>(option));
288​ if (!buttonOption)
289​ return true;
290​
291​ // rect and palette
292​ const auto &rect(option->rect);
293​
294​ // button state
295​ const State &state(option->state);
296​ const bool enabled(state & State_Enabled);
297​ const bool mouseOver(enabled && (state & State_MouseOver));
298​ const bool hasFocus((enabled && (state & State_HasFocus)) && !(widget && widget->focusProxy()));
299​ const bool sunken(state & (State_On | State_Sunken));
300​ const bool flat(buttonOption->features & QStyleOptionButton::Flat);
301​
302​ // update animation state
303​ // mouse over takes precedence over focus
304​ _animations->widgetStateEngine().updateState(widget, AnimationHover, mouseOver);
305​ _animations->widgetStateEngine().updateState(widget, AnimationFocus, hasFocus && !mouseOver);
306​
307​ const AnimationMode mode(_animations->widgetStateEngine().buttonAnimationMode(widget));
308​ const qreal opacity(_animations->widgetStateEngine().buttonOpacity(widget));
309​
310​ if (flat) {
311​ // define colors and render
312​ const auto &palette(option->palette);
313​ const auto color(_helper->toolButtonColor(palette, mouseOver, hasFocus, sunken, opacity, mode));
314​ _helper->renderToolButtonFrame(painter, rect, color, sunken);
315​
316​ } else {
317​ // update button color from palette in case button is default
318​ QPalette palette(option->palette);
319​ if (enabled && buttonOption->features & QStyleOptionButton::DefaultButton) {
320​ const auto button(palette.color(QPalette::Button));
321​ const auto base(palette.color(QPalette::Base));
322​ palette.setColor(QPalette::Button, KColorUtils::mix(button, base, 0.7));
323​ }
324​
325​ const auto shadow(_helper->shadowColor(palette));
326​ const auto outline(_helper->buttonOutlineColor(palette, mouseOver, hasFocus, opacity, mode));
327​ const auto background(_helper->buttonBackgroundColor(palette, mouseOver, hasFocus, sunken, opacity, mode));
328​
329​ // render
330​ _helper->renderButtonFrame(painter, rect, background, outline, shadow, hasFocus, sunken);
331​ }
332​
333​ return true;
334​}
335​
336​//___________________________________________________________________________________
337​bool Style::drawPushButtonLabelControl(const QStyleOption *option, QPainter *painter, const QWidget *widget) const
338​{
339​ // cast option and check
340​ const auto buttonOption(qstyleoption_cast<const QStyleOptionButton *>(option));
341​ if (!buttonOption)
342​ return true;
343​
344​ // copy rect and palette
345​ const auto &rect(option->rect);
346​ const auto &palette(option->palette);
347​
348​ // state
349​ const State &state(option->state);
350​ const bool enabled(state & State_Enabled);
351​ const bool sunken(state & (State_On | State_Sunken));
352​ const bool mouseOver(enabled && (option->state & State_MouseOver));
353​ const bool hasFocus(enabled && !mouseOver && (option->state & State_HasFocus));
354​ const bool flat(buttonOption->features & QStyleOptionButton::Flat);
355​
356​ // content
357​ const bool hasText(!buttonOption->text.isEmpty());
358​ const bool hasIcon((showIconsOnPushButtons() || flat || !hasText) && !buttonOption->icon.isNull());
359​
360​ // contents
361​ auto contentsRect(rect);
362​ if (sunken && !flat)
363​ contentsRect.translate(1, 1);
364​
365​ // color role
366​ QPalette::ColorRole textRole;
367​ if (flat) {
368​ if (hasFocus && sunken)
369​ textRole = QPalette::HighlightedText;
370​ else
371​ textRole = QPalette::WindowText;
372​
373​ } else if (hasFocus)
374​ textRole = QPalette::HighlightedText;
375​ else
376​ textRole = QPalette::ButtonText;
377​
378​ // menu arrow
379​ if (buttonOption->features & QStyleOptionButton::HasMenu) {
380​ // define rect
381​ auto arrowRect(contentsRect);
382​ arrowRect.setLeft(contentsRect.right() - Metrics::MenuButton_IndicatorWidth + 1);
383​ arrowRect = centerRect(arrowRect, Metrics::MenuButton_IndicatorWidth, Metrics::MenuButton_IndicatorWidth);
384​
385​ contentsRect.setRight(arrowRect.left() - Metrics::Button_ItemSpacing - 1);
386​ contentsRect.adjust(Metrics::Button_MarginWidth, 0, 0, 0);
387​
388​ arrowRect = visualRect(option, arrowRect);
389​
390​ // define color
391​ const auto arrowColor(_helper->arrowColor(palette, textRole));
392​ _helper->renderArrow(painter, arrowRect, arrowColor, ArrowDown);
393​ }
394​
395​ // icon size
396​ QSize iconSize;
397​ if (hasIcon) {
398​ iconSize = buttonOption->iconSize;
399​ if (!iconSize.isValid()) {
400​ const int metric(pixelMetric(PM_SmallIconSize, option, widget));
401​ iconSize = QSize(metric, metric);
402​ }
403​ }
404​
405​ // text size
406​ const int textFlags(_mnemonics->textFlags() | Qt::AlignCenter);
407​ const QSize textSize(option->fontMetrics.size(textFlags, buttonOption->text));
408​
409​ // adjust text and icon rect based on options
410​ QRect iconRect;
411​ QRect textRect;
412​
413​ if (hasText && !hasIcon)
414​ textRect = contentsRect;
415​ else if (hasIcon && !hasText)
416​ iconRect = contentsRect;
417​ else {
418​ const int contentsWidth(iconSize.width() + textSize.width() + Metrics::Button_ItemSpacing);
419​ iconRect = QRect(QPoint(contentsRect.left() + (contentsRect.width() - contentsWidth) / 2, contentsRect.top() + (contentsRect.height() - iconSize.height()) / 2), iconSize);
420​ textRect = QRect(QPoint(iconRect.right() + Metrics::ToolButton_ItemSpacing + 1, contentsRect.top() + (contentsRect.height() - textSize.height()) / 2), textSize);
421​ }
422​
423​ // handle right to left
424​ if (iconRect.isValid())
425​ iconRect = visualRect(option, iconRect);
426​ if (textRect.isValid())
427​ textRect = visualRect(option, textRect);
428​
429​ // make sure there is enough room for icon
430​ if (iconRect.isValid())
431​ iconRect = centerRect(iconRect, iconSize);
432​
433​ // render icon
434​ if (hasIcon && iconRect.isValid()) {
435​ // icon state and mode
436​ const QIcon::State iconState(sunken ? QIcon::On : QIcon::Off);
437​ QIcon::Mode iconMode;
438​ if (!enabled)
439​ iconMode = QIcon::Disabled;
440​ else if (!flat && hasFocus)
441​ iconMode = QIcon::Selected;
442​ else if (mouseOver && flat)
443​ iconMode = QIcon::Active;
444​ else
445​ iconMode = QIcon::Normal;
446​
447​ const auto pixmap = buttonOption->icon.pixmap(iconSize, iconMode, iconState);
448​ drawItemPixmap(painter, iconRect, Qt::AlignCenter, pixmap);
449​ }
450​
451​ // render text
452​ if (hasText && textRect.isValid()) {
453​ drawItemText(painter, textRect, textFlags, palette, enabled, buttonOption->text, textRole);
454​ }
455​
456​ return true;
457​}
458​
459​//____________________________________________________________________
460​bool Style::showIconsOnPushButtons() const
461​{
462​ const KConfigGroup g(KSharedConfig::openConfig(), "KDE");
463​ return g.readEntry("ShowIconsOnPushButtons", true);
464​}
465​
466​}