okular/part/pageviewutils.h
2021-06-10 08:11:56 +00:00

126 lines
3.5 KiB
C++

/*
SPDX-FileCopyrightText: 2004-2005 Enrico Ros <eros.kde@email.it>
Work sponsored by the LiMux project of the city of Munich:
SPDX-FileCopyrightText: 2017 Klarälvdalens Datakonsult AB a KDAB Group company <info@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef _PAGEVIEW_UTILS_H_
#define _PAGEVIEW_UTILS_H_
#include <QHash>
#include <QPixmap>
#include <QRect>
#include <qwidget.h>
#include "core/area.h"
class QTimer;
class FormWidgetIface;
class PageView;
class VideoWidget;
namespace Okular
{
class Movie;
class Page;
}
/**
* @short PageViewItem represents graphically a page into the PageView.
*
* It has methods for settings Item's geometry and other visual properties such
* as the individual zoom factor.
*/
class PageViewItem
{
public:
explicit PageViewItem(const Okular::Page *page);
~PageViewItem();
PageViewItem(const PageViewItem &) = delete;
PageViewItem &operator=(const PageViewItem &) = delete;
const Okular::Page *page() const;
int pageNumber() const;
double zoomFactor() const;
bool isVisible() const;
QSet<FormWidgetIface *> &formWidgets();
QHash<Okular::Movie *, VideoWidget *> &videoWidgets();
/* The page is cropped as follows: */
const Okular::NormalizedRect &crop() const;
/* Real geometry into which the cropped page is rendered: */
const QRect &croppedGeometry() const;
int croppedWidth() const;
int croppedHeight() const;
/* "Uncropped" geometry:
* If the whole page was rendered into the uncropped geometry then the
* cropped page would be rendered into the real geometry.
* (Hence, uncropped always contains cropped, and they are equal only if
* the page is uncropped.) This is just for convenience in calculations.
*/
const QRect &uncroppedGeometry() const;
int uncroppedWidth() const;
int uncroppedHeight() const;
/* Convert absolute geometry coordinates to normalized [0,1] page coordinates: */
double absToPageX(double absX) const;
double absToPageY(double absY) const;
void setWHZC(int w, int h, double zoom, const Okular::NormalizedRect &c);
void moveTo(int x, int y);
void setVisible(bool visible);
void invalidate();
bool setFormWidgetsVisible(bool visible);
void reloadFormWidgetsState();
private:
const Okular::Page *m_page;
double m_zoomFactor;
bool m_visible;
bool m_formsVisible;
QRect m_croppedGeometry;
QRect m_uncroppedGeometry;
Okular::NormalizedRect m_crop;
QSet<FormWidgetIface *> m_formWidgets;
QHash<Okular::Movie *, VideoWidget *> m_videoWidgets;
};
/**
* @short A widget that displays messages in the top-left corner.
*
* This is a widget with thin border and rounded corners that displays a given
* text along as an icon. It's meant to be used for displaying messages to the
* user by placing this above other widgets.
*/
class PageViewMessage : public QWidget
{
Q_OBJECT
public:
explicit PageViewMessage(QWidget *parent);
enum Icon { None, Info, Warning, Error, Find, Annotation };
void display(const QString &message, const QString &details = QString(), Icon icon = Info, int durationMs = 4000);
protected:
bool eventFilter(QObject *obj, QEvent *event) override;
void paintEvent(QPaintEvent *e) override;
void mousePressEvent(QMouseEvent *e) override;
private:
QRect computeTextRect(const QString &message, int extra_width) const;
void computeSizeAndResize();
QString m_message;
QString m_details;
QPixmap m_symbol;
QTimer *m_timer;
int m_lineSpacing;
};
#endif