Dillo v3.1.1-111-gd4f56d0d
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An interface to encapsulate platform dependent drawing. More...
#include <view.hh>
Public Member Functions | |
virtual void | setLayout (Layout *layout)=0 |
This methods notifies the view, that it has been attached to a layout. | |
virtual void | setCanvasSize (int width, int ascent, int descent)=0 |
Set the canvas size. | |
virtual void | setCursor (style::Cursor cursor)=0 |
Set the cursor appearance. | |
virtual void | setBgColor (style::Color *color)=0 |
Set the background of the view. | |
virtual bool | usesViewport ()=0 |
Return, whether this view uses a viewport. | |
virtual int | getHScrollbarThickness ()=0 |
Get the thickness of the horizontal scrollbar, when it is visible. | |
virtual int | getVScrollbarThickness ()=0 |
Get the thickness of the vertical scrollbar, when it is visible. | |
virtual int | getScrollbarOnLeft ()=0 |
virtual void | scrollTo (int x, int y)=0 |
Scroll the vieport to the given position. | |
virtual void | scroll (ScrollCommand) |
Scroll the viewport as commanded. | |
virtual void | setViewportSize (int width, int height, int hScrollbarThickness, int vScrollbarThickness)=0 |
Set the viewport size. | |
virtual void | startDrawing (Rectangle *area)=0 |
Called before drawing. | |
virtual void | finishDrawing (Rectangle *area)=0 |
Called after drawing. | |
virtual void | queueDraw (Rectangle *area)=0 |
Queue a region, which is given in canvas coordinates, for drawing. | |
virtual void | queueDrawTotal ()=0 |
Queue the total viewport for drawing. | |
virtual void | cancelQueueDraw ()=0 |
Cancel a draw queue request. | |
virtual void | drawPoint (style::Color *color, style::Color::Shading shading, int x, int y)=0 |
virtual void | drawLine (style::Color *color, style::Color::Shading shading, int x1, int y1, int x2, int y2)=0 |
virtual void | drawTypedLine (style::Color *color, style::Color::Shading shading, style::LineType type, int width, int x1, int y1, int x2, int y2)=0 |
virtual void | drawRectangle (style::Color *color, style::Color::Shading shading, bool filled, int x, int y, int width, int height)=0 |
virtual void | drawArc (style::Color *color, style::Color::Shading shading, bool filled, int centerX, int centerY, int width, int height, int angle1, int angle2)=0 |
virtual void | drawPolygon (style::Color *color, style::Color::Shading shading, bool filled, bool convex, Point *points, int npoints)=0 |
virtual void | drawText (style::Font *font, style::Color *color, style::Color::Shading shading, int x, int y, const char *text, int len)=0 |
virtual void | drawSimpleWrappedText (style::Font *font, style::Color *color, style::Color::Shading shading, int x, int y, int w, int h, const char *text)=0 |
virtual void | drawImage (Imgbuf *imgbuf, int xRoot, int yRoot, int x, int y, int width, int height)=0 |
virtual View * | getClippingView (int x, int y, int width, int height)=0 |
virtual void | mergeClippingView (View *clippingView)=0 |
Public Member Functions inherited from lout::object::Object | |
virtual | ~Object () |
The destructor is defined as virtual (but not abstract), so that destruction of Object's works properly. | |
virtual bool | equals (Object *other) |
Returns, whether two objects are equal. | |
virtual int | hashValue () |
Return a hash value for the object. | |
virtual Object * | clone () |
Return an exact copy of the object. | |
virtual void | intoStringBuffer (misc::StringBuffer *sb) |
Store a textual representation of the object in a misc::StringBuffer. | |
const char * | toString () |
Use object::Object::intoStringBuffer to return a textual representation of the object. | |
virtual size_t | sizeOf () |
Return the number of bytes, this object totally uses. | |
An interface to encapsulate platform dependent drawing.
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pure virtual |
Cancel a draw queue request.
If dw::core::View::queueDraw or dw::core::View::queueDrawTotal have been called before, and the actual drawing was not processed yet, the actual drawing should be cancelled. Otherwise, the cancellation should be ignored.
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::core::Layout::queueResize().
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pure virtual |
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::Bullet::draw(), and dw::core::Circle::draw().
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pure virtual |
Implemented in dw::fltk::FltkPreview, and dw::fltk::FltkWidgetView.
Referenced by dw::Image::draw(), and dw::core::style::drawBackgroundImage().
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pure virtual |
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::core::style::drawBorderBottom(), dw::core::style::drawBorderLeft(), dw::core::style::drawBorderRight(), and dw::core::style::drawBorderTop().
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pure virtual |
Implemented in dw::fltk::FltkViewBase.
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pure virtual |
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pure virtual |
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::Textblock::decorateText(), dw::Bullet::draw(), dw::core::Rectangle::draw(), dw::core::style::drawBackground(), dw::Textblock::drawSpace(), and dw::Textblock::drawWord0().
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pure virtual |
Implemented in dw::fltk::FltkPreview, and dw::fltk::FltkWidgetView.
Referenced by dw::Image::draw().
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pure virtual |
Implemented in dw::fltk::FltkPreview, and dw::fltk::FltkWidgetView.
Referenced by dw::Textblock::drawText().
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pure virtual |
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::core::style::drawBorderBottom(), dw::core::style::drawBorderLeft(), dw::core::style::drawBorderRight(), and dw::core::style::drawBorderTop().
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pure virtual |
Called after drawing.
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::core::Layout::draw().
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pure virtual |
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::Image::draw().
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pure virtual |
Get the thickness of the horizontal scrollbar, when it is visible.
Does not have to be implemented, when usesViewport returns false.
Implemented in dw::fltk::FltkFlatView, dw::fltk::FltkPreview, and dw::fltk::FltkViewport.
Referenced by dw::core::Layout::attachView().
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pure virtual |
Implemented in dw::fltk::FltkFlatView, dw::fltk::FltkPreview, and dw::fltk::FltkViewport.
Referenced by dw::core::Layout::resizeIdle().
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pure virtual |
Get the thickness of the vertical scrollbar, when it is visible.
Does not have to be implemented, when usesViewport returns false.
Implemented in dw::fltk::FltkFlatView, dw::fltk::FltkPreview, and dw::fltk::FltkViewport.
Referenced by dw::core::Layout::attachView().
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pure virtual |
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::Image::draw().
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pure virtual |
Queue a region, which is given in canvas coordinates, for drawing.
The view implementation is responsible, that this region is drawn, either immediately, or (which is more typical, since more efficient) the areas are collected, combined (as far as possible), and the drawing is later done in an idle function.
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::core::Layout::queueDraw().
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pure virtual |
Queue the total viewport for drawing.
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::core::Layout::removeWidget(), and dw::core::Layout::scrollIdle().
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inlinevirtual |
Scroll the viewport as commanded.
Reimplemented in dw::fltk::FltkPreview, and dw::fltk::FltkViewport.
Definition at line 87 of file view.hh.
Referenced by dw::core::Layout::scroll().
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pure virtual |
Scroll the vieport to the given position.
Does not have to be implemented, when usesViewport returns false.
Implemented in dw::fltk::FltkFlatView, dw::fltk::FltkPreview, and dw::fltk::FltkViewport.
Referenced by dw::core::Layout::attachView(), and dw::core::Layout::scrollIdle().
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pure virtual |
Set the background of the view.
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::core::Layout::attachView(), and dw::core::Layout::setBgColor().
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pure virtual |
Set the canvas size.
Implemented in dw::fltk::FltkFlatView, dw::fltk::FltkPreview, dw::fltk::FltkViewBase, and dw::fltk::FltkViewport.
Referenced by dw::core::Layout::attachView(), dw::core::Layout::removeWidget(), and dw::core::Layout::resizeIdle().
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pure virtual |
Set the cursor appearance.
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::core::Layout::attachView(), and dw::core::Layout::setCursor().
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pure virtual |
This methods notifies the view, that it has been attached to a layout.
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::core::Layout::attachView(), and dw::core::Layout::detachView().
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pure virtual |
Set the viewport size.
Does not have to be implemented, when usesViewport returns false.
This will normally imply a resize of the UI widget. Width and height are the dimensions of the new size, including the scrollbar thicknesses.
Implemented in dw::fltk::FltkFlatView, dw::fltk::FltkPreview, and dw::fltk::FltkViewport.
Referenced by dw::core::Layout::attachView(), dw::core::Layout::removeWidget(), and dw::core::Layout::resizeIdle().
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pure virtual |
Called before drawing.
All actual drawing operations will be enclosed into calls of dw::core:View::startDrawing and dw::core:View::finishDrawing. They may be implemented, e.g. when a backing pixmap is used, to prevent flickering. StartDrawing() will then initialize the backing pixmap, all other drawing operations will draw into it, and finishDrawing() will merge it into the window.
Implemented in dw::fltk::FltkViewBase.
Referenced by dw::core::Layout::draw().
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pure virtual |
Return, whether this view uses a viewport.
Implemented in dw::fltk::FltkFlatView, dw::fltk::FltkPreview, and dw::fltk::FltkViewport.
Referenced by dw::core::Layout::attachView(), dw::core::Layout::removeWidget(), dw::core::Layout::scroll(), and dw::fltk::FltkViewBase::setLayout().