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tdelibs/tdehtml/rendering/render_canvas.h

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/*
* This file is part of the HTML widget for KDE.
*
* Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
* (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef render_canvas_h
#define render_canvas_h
#include "render_block.h"
class TDEHTMLView;
class TQScrollView;
namespace tdehtml {
class RenderPage;
class RenderStyle;
enum CanvasMode {
CanvasViewPort, // Paints inside a viewport
CanvasPage, // Paints one page
CanvasDocument // Paints the whole document
};
class RenderCanvas : public RenderBlock
{
public:
RenderCanvas(DOM::NodeImpl* node, TDEHTMLView *view);
~RenderCanvas();
virtual const char *renderName() const { return "RenderCanvas"; }
virtual bool isCanvas() const { return true; }
virtual void setStyle(RenderStyle *style);
virtual void layout();
virtual void calcWidth();
virtual void calcHeight();
virtual void calcMinMaxWidth();
virtual bool absolutePosition(int &xPos, int&yPos, bool f = false) const;
int docHeight() const;
int docWidth() const;
TDEHTMLView *view() const { return m_view; }
virtual void repaint(Priority p=NormalPriority);
virtual void repaintRectangle(int x, int y, int w, int h, Priority p=NormalPriority, bool f=false);
void repaintViewRectangle(int x, int y, int w, int h, bool asap=false);
bool needsFullRepaint() const;
void deferredRepaint( RenderObject* o );
void scheduleDeferredRepaints();
virtual void paint(PaintInfo&, int tx, int ty);
virtual void paintBoxDecorations(PaintInfo& paintInfo, int _tx, int _ty);
virtual void setSelection(RenderObject *s, int sp, RenderObject *e, int ep);
virtual void clearSelection(bool doRepaint=true);
virtual RenderObject *selectionStart() const { return m_selectionStart; }
virtual RenderObject *selectionEnd() const { return m_selectionEnd; }
void setPrintImages(bool enable) { m_printImages = enable; }
bool printImages() const { return m_printImages; }
void setCanvasMode(CanvasMode mode) { m_canvasMode = mode; }
CanvasMode canvasMode() const { return m_canvasMode; }
void setPagedMode(bool b) { m_pagedMode = b; }
void setStaticMode(bool b) { m_staticMode = b; }
bool pagedMode() const { return m_pagedMode; }
bool staticMode() const { return m_staticMode; }
void setPageTop(int top) {
m_pageTop = top;
// m_y = top;
}
void setPageBottom(int bottom) { m_pageBottom = bottom; }
int pageTop() const { return m_pageTop; }
int pageBottom() const { return m_pageBottom; }
int pageTopAfter(int y) const {
if (pageHeight() == 0) return 0;
return (y / pageHeight() + 1) * pageHeight() ;
}
int crossesPageBreak(int top, int bottom) const {
if (pageHeight() == 0) return false;
int pT = top / pageHeight();
// bottom is actually the first line not in the box
int pB = (bottom-1) / pageHeight();
return (pT == pB) ? 0 : (pB + 1);
}
void setPageNumber(int number) { m_pageNr = number; }
int pageNumber() const { return m_pageNr; }
public:
virtual void setWidth( int width ) { m_rootWidth = m_width = width; }
virtual void setHeight( int height ) { m_rootHeight = m_height = height; }
// void setPageHeight( int height ) { m_viewportHeight = m_pageHeight = height; }
int pageHeight() const { return m_pageBottom - m_pageTop; }
int viewportWidth() const { return m_viewportWidth; }
int viewportHeight() const { return m_viewportHeight; }
RenderPage* page();
TQRect selectionRect() const;
void setMaximalOutlineSize(int o) { m_maximalOutlineSize = o; }
int maximalOutlineSize() const { return m_maximalOutlineSize; }
void setNeedsWidgetMasks( bool b=true) { m_needsWidgetMasks = b; }
bool needsWidgetMasks() const { return m_needsWidgetMasks; }
void updateDocSizeAfterLayerTranslation( RenderObject* o, bool posXOffset, bool posYOffset );
protected:
// makes sure document, scrollbars and viewport size are accurate
void updateDocumentSize();
// internal setters for cached values of document width/height
// Setting to -1/-1 invalidates the cache.
void setCachedDocWidth(int w ) { m_cachedDocWidth = w; }
void setCachedDocHeight(int h) { m_cachedDocHeight = h; }
virtual void selectionStartEnd(int& spos, int& epos);
virtual TQRect viewRect() const;
TDEHTMLView *m_view;
RenderObject* m_selectionStart;
RenderObject* m_selectionEnd;
int m_selectionStartPos;
int m_selectionEndPos;
CanvasMode m_canvasMode;
int m_rootWidth;
int m_rootHeight;
int m_viewportWidth;
int m_viewportHeight;
int m_cachedDocWidth;
int m_cachedDocHeight;
bool m_printImages;
bool m_needsFullRepaint;
// Canvas is not interactive
bool m_staticMode;
// Canvas is paged
bool m_pagedMode;
// Canvas contains overlaid widgets
bool m_needsWidgetMasks;
short m_pageNr;
int m_pageTop;
int m_pageBottom;
RenderPage* m_page;
int m_maximalOutlineSize; // Used to apply a fudge factor to dirty-rect checks on blocks/tables.
TQValueList<RenderObject*> m_dirtyChildren;
};
inline RenderCanvas* RenderObject::canvas() const
{
return static_cast<RenderCanvas*>(document()->renderer());
}
// Represents the page-context of CSS
class RenderPage
{
public:
RenderPage(RenderCanvas* canvas) : m_canvas(canvas),
m_marginTop(0), m_marginBottom(0),
m_marginLeft(0), m_marginRight(0),
m_pageWidth(0), m_pageHeight(0),
m_fixedSize(false)
{
m_style = new RenderPageStyle();
}
virtual ~RenderPage()
{
delete m_style;
}
int marginTop() const { return m_marginTop; }
int marginBottom() const { return m_marginBottom; }
int marginLeft() const { return m_marginLeft; }
int marginRight() const { return m_marginRight; }
void setMarginTop(int margin) { m_marginTop = margin; }
void setMarginBottom(int margin) { m_marginBottom = margin; }
void setMarginLeft(int margin) { m_marginLeft = margin; }
void setMarginRight(int margin) { m_marginRight = margin; }
int pageWidth() const { return m_pageWidth; }
int pageHeight() const { return m_pageHeight; }
void setPageSize(int width, int height) {
m_pageWidth = width;
m_pageHeight = height;
}
// Returns true if size was set by document, false if set by user-agent
bool fixedSize() const { return m_fixedSize; }
void setFixedSize(bool b) { m_fixedSize = b; }
RenderPageStyle* style() { return m_style; }
const RenderPageStyle* style() const { return m_style; }
protected:
RenderCanvas* m_canvas;
RenderPageStyle* m_style;
int m_marginTop;
int m_marginBottom;
int m_marginLeft;
int m_marginRight;
int m_pageWidth;
int m_pageHeight;
bool m_fixedSize;
};
}
#endif