387 lines
12 KiB
C++
387 lines
12 KiB
C++
/*
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* Copyright (C) 2007 by Aaron Seigo <aseigo@kde.org>
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* Copyright (C) 2007 by Matt Broadstone <mbroadst@gmail.com>
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* Copyright (C) 2006-2007 Fredrik Höglund <fredrik@kde.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef PLASMA_ICONWIDGET_P_H
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#define PLASMA_ICONWIDGET_P_H
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#include <QtCore/QEvent>
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#include <QtGui/QApplication>
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#include <QtGui/QIcon>
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#include <QtGui/QStyleOptionGraphicsItem>
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#include <QtGui/QTextLayout>
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#include <QtGui/QTextOption>
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#include <plasma/plasma_export.h>
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#include <plasma/framesvg.h>
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#include <plasma/theme.h>
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#include <plasma/svg.h>
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#include "iconwidget.h"
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#include "animator.h"
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#include "private/actionwidgetinterface_p.h"
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class QAction;
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class QPainter;
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class QTextLayout;
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namespace Plasma
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{
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class PLASMA_EXPORT IconAction
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{
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public:
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IconAction(IconWidget *icon, QAction *action);
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void show();
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void hide();
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bool isVisible() const;
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int animationId() const;
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QAction *action() const;
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void paint(QPainter *painter) const;
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bool event(QEvent::Type type, const QPointF &pos);
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void setSelected(bool selected);
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bool isSelected() const;
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bool isHovered() const;
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bool isPressed() const;
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void setRect(const QRectF &rect);
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QRectF rect() const;
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private:
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void rebuildPixmap();
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IconWidget *m_icon;
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QAction *m_action;
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QPixmap m_pixmap;
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QRectF m_rect;
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bool m_hovered;
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bool m_pressed;
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bool m_selected;
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bool m_visible;
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int m_animationId;
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};
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struct Margin
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{
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qreal left, right, top, bottom;
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};
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class IconWidgetPrivate : public ActionWidgetInterface<IconWidget>
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{
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public:
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enum MarginType {
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ItemMargin = 0,
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TextMargin,
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IconMargin,
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NMargins
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};
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enum IconWidgetState {
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NoState = 0,
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HoverState = 1,
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PressedState = 2,
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ManualPressedState = 4
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};
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Q_DECLARE_FLAGS(IconWidgetStates, IconWidgetState)
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IconWidgetPrivate(IconWidget *i);
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~IconWidgetPrivate();
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void changed()
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{
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emit q->changed();
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}
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void drawBackground(QPainter *painter, IconWidgetState state);
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void drawText(QPainter *painter);
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void drawTextItems(QPainter *painter, const QStyleOptionGraphicsItem *option,
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const QTextLayout &labelLayout, const QTextLayout &infoLayout) const;
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QPixmap decoration(const QStyleOptionGraphicsItem *option, bool useHoverEffect, bool usePressedEffect);
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QPointF iconPosition(const QStyleOptionGraphicsItem *option, const QPixmap &pixmap) const;
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QSizeF displaySizeHint(const QStyleOptionGraphicsItem *option, const qreal width) const;
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QBrush foregroundBrush(const QStyleOptionGraphicsItem *option) const;
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QBrush backgroundBrush(const QStyleOptionGraphicsItem *option) const;
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QString elidedText(QTextLayout &layout,
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const QStyleOptionGraphicsItem *option,
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const QSizeF &maxSize) const;
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QSizeF layoutText(QTextLayout &layout,
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const QStyleOptionGraphicsItem *option,
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const QString &text, const QSizeF &constraints) const;
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QSizeF layoutText(QTextLayout &layout, const QString &text,
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qreal maxWidth) const;
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QRectF labelRectangle(const QStyleOptionGraphicsItem *option,
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const QPixmap &icon, const QString &string) const;
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void layoutTextItems(const QStyleOptionGraphicsItem *option,
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const QPixmap &icon, QTextLayout *labelLayout,
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QTextLayout *infoLayout, QRectF *textBoundingRect) const;
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int maxWordWidth(const QString text) const;
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inline void setLayoutOptions(QTextLayout &layout,
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const QStyleOptionGraphicsItem *options,
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const Qt::Orientation orientation) const;
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inline Qt::LayoutDirection iconDirection(const QStyleOptionGraphicsItem *option) const;
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enum {
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Minibutton = 64,
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MinibuttonHover = 128,
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MinibuttonPressed = 256
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};
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enum ActionPosition {
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TopLeft = 0,
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TopRight,
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BottomLeft,
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BottomRight,
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LastIconPosition
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};
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// Margin functions
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inline void setActiveMargins();
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void setVerticalMargin(MarginType type, qreal left, qreal right, qreal top, qreal bottom);
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void setHorizontalMargin(MarginType type, qreal left, qreal right, qreal top, qreal bottom);
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inline void setVerticalMargin(MarginType type, qreal hor, qreal ver);
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inline void setHorizontalMargin(MarginType type, qreal hor, qreal ver);
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inline QRectF addMargin(const QRectF &rect, MarginType type) const;
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inline QRectF subtractMargin(const QRectF &rect, MarginType type) const;
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inline QSizeF addMargin(const QSizeF &size, MarginType type) const;
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inline QSizeF subtractMargin(const QSizeF &size, MarginType type) const;
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inline QRectF actionRect(ActionPosition position) const;
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void actionDestroyed(QObject *obj);
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void svgChanged();
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void readColors();
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void colorConfigChanged();
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void iconConfigChanged();
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void hoverAnimationUpdate(qreal progress);
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void init();
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void layoutIcons(const QStyleOptionGraphicsItem *option);
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void hoverEffect(bool);
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IconWidget *q;
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QString text;
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QString infoText;
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Svg *iconSvg;
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FrameSvg *background;
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QString iconSvgElement;
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QPixmap iconSvgPixmap;
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QColor textColor;
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QColor textBgColor;
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QColor shadowColor;
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int hoverAnimId;
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qreal hoverAlpha;
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QSizeF iconSize;
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QIcon icon;
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IconWidgetStates states;
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Qt::Orientation orientation;
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int numDisplayLines;
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QSizeF currentSize;
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QPointF clickStartPos;
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QList<IconAction*> cornerActions;
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Margin verticalMargin[NMargins];
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Margin horizontalMargin[NMargins];
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Margin *activeMargins;
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bool iconSvgElementChanged : 1;
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bool fadeIn : 1;
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bool invertLayout : 1;
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bool drawBg : 1;
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bool textBgCustomized : 1;
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static const int maxDisplayLines = 5;
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static const int iconActionSize = 26;
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static const int iconActionMargin = 4;
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bool customFont;
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};
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Q_DECLARE_OPERATORS_FOR_FLAGS(IconWidgetPrivate::IconWidgetStates)
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// Inline methods
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void IconWidgetPrivate::setLayoutOptions(QTextLayout &layout,
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const QStyleOptionGraphicsItem *option,
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const Qt::Orientation orientation) const
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{
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QTextOption textoption;
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textoption.setTextDirection(option->direction);
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if (orientation == Qt::Horizontal) {
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textoption.setAlignment(Qt::Alignment(Qt::AlignLeft|Qt::AlignVCenter));
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} else {
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textoption.setAlignment(Qt::AlignCenter);
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}
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textoption.setWrapMode(QTextOption::WordWrap); // NOTE: assumption as well
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layout.setFont(QApplication::font()); // NOTE: find better ways to get the font
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layout.setTextOption(textoption);
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}
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Qt::LayoutDirection IconWidgetPrivate::iconDirection(const QStyleOptionGraphicsItem *option) const
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{
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Qt::LayoutDirection direction;
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if (invertLayout && orientation == Qt::Horizontal) {
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if (option->direction == Qt::LeftToRight) {
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direction = Qt::RightToLeft;
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} else {
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direction = Qt::LeftToRight;
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}
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} else {
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direction = option->direction;
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}
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return direction;
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}
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void IconWidgetPrivate::setActiveMargins()
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{
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//sync here itemmargin with contentsrect, not overly pretty but it's where it's more reliable
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qreal left, top, right, bottom;
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q->getContentsMargins(&left, &top, &right, &bottom);
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if (left || top || right || bottom) {
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verticalMargin[ItemMargin].left = horizontalMargin[ItemMargin].left = left;
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verticalMargin[ItemMargin].top = horizontalMargin[ItemMargin].top = top;
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verticalMargin[ItemMargin].right = horizontalMargin[ItemMargin].right = right;
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verticalMargin[ItemMargin].bottom = horizontalMargin[ItemMargin].bottom = bottom;
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}
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activeMargins = (orientation == Qt::Horizontal ? horizontalMargin : verticalMargin);
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}
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void IconWidgetPrivate::setVerticalMargin(MarginType type, qreal left, qreal top,
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qreal right, qreal bottom)
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{
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verticalMargin[type].left = left;
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verticalMargin[type].right = right;
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verticalMargin[type].top = top;
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verticalMargin[type].bottom = bottom;
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}
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void IconWidgetPrivate::setHorizontalMargin(MarginType type, qreal left, qreal top,
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qreal right, qreal bottom)
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{
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horizontalMargin[type].left = left;
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horizontalMargin[type].right = right;
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horizontalMargin[type].top = top;
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horizontalMargin[type].bottom = bottom;
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}
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void IconWidgetPrivate::setVerticalMargin(MarginType type, qreal horizontal, qreal vertical)
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{
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setVerticalMargin(type, horizontal, vertical, horizontal, vertical);
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}
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void IconWidgetPrivate::setHorizontalMargin(MarginType type, qreal horizontal, qreal vertical)
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{
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setHorizontalMargin(type, horizontal, vertical, horizontal, vertical);
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}
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QRectF IconWidgetPrivate::addMargin(const QRectF &rect, MarginType type) const
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{
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Q_ASSERT(activeMargins);
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const Margin &m = activeMargins[type];
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return rect.adjusted(-m.left, -m.top, m.right, m.bottom);
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}
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QRectF IconWidgetPrivate::subtractMargin(const QRectF &rect, MarginType type) const
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{
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Q_ASSERT(activeMargins);
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const Margin &m = activeMargins[type];
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return rect.adjusted(m.left, m.top, -m.right, -m.bottom);
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}
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QSizeF IconWidgetPrivate::addMargin(const QSizeF &size, MarginType type) const
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{
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Q_ASSERT(activeMargins);
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const Margin &m = activeMargins[type];
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return QSizeF(size.width() + m.left + m.right, size.height() + m.top + m.bottom);
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}
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QSizeF IconWidgetPrivate::subtractMargin(const QSizeF &size, MarginType type) const
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{
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Q_ASSERT(activeMargins);
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const Margin &m = activeMargins[type];
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return QSizeF(size.width() - m.left - m.right, size.height() - m.top - m.bottom);
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}
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int IconWidgetPrivate::maxWordWidth(const QString text) const
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{
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QFontMetricsF fm = Plasma::Theme::defaultTheme()->fontMetrics();
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QStringList words = text.split(' ');
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qreal maxWidth = 0;
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foreach (const QString &word, words) {
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maxWidth = qMax(maxWidth, fm.width(word));
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}
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return maxWidth;
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}
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QRectF IconWidgetPrivate::actionRect(ActionPosition position) const
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{
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switch (position) {
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case TopLeft:
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return QRectF(iconActionMargin,
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iconActionMargin,
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iconActionSize,
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iconActionSize);
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case TopRight:
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return QRectF(currentSize.width() - iconActionSize - iconActionMargin,
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iconActionMargin,
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iconActionSize,
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iconActionSize);
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case BottomLeft:
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return QRectF(iconActionMargin,
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currentSize.height() - iconActionSize - iconActionMargin,
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iconActionSize,
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iconActionSize);
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//BottomRight
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default:
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return QRectF(currentSize.width() - iconActionSize - iconActionMargin,
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currentSize.height() - iconActionSize - iconActionMargin,
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iconActionSize,
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iconActionSize);
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}
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}
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} // Namespace
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#endif
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