KoZoomHandler Class Reference
This class handles the zooming and DPI stuff (conversions between pt values and pixels). More...
#include <kozoomhandler.h>
Inheritance diagram for KoZoomHandler:


Public Member Functions | |
virtual void | setZoomAndResolution (int zoom, int dpiX, int dpiY) |
double | zoomedResolutionX () const |
double | zoomedResolutionY () const |
double | resolutionX () const |
double | resolutionY () const |
double | zoomFactorX () const |
double | zoomFactorY () const |
void | setResolution (double resolutionX, double resolutionY) |
virtual void | setZoomedResolution (double zoomedResolutionX, double zoomedResolutionY) |
void | setZoom (int zoom) |
int | zoom () const |
int | zoomItX (double z) const |
int | zoomItY (double z) const |
QPoint | zoomPoint (const KoPoint &p) const |
QRect | zoomRect (const KoRect &r) const |
QSize | zoomSize (const KoSize &s) const |
double | unzoomItX (int x) const |
double | unzoomItY (int y) const |
KoPoint | unzoomPoint (const QPoint &p) const |
KoRect | unzoomRect (const QRect &r) const |
int | pixelToLayoutUnitX (int x) const |
int | pixelToLayoutUnitY (int y) const |
QPoint | pixelToLayoutUnit (const QPoint &p) const |
QRect | pixelToLayoutUnit (const QRect &r) const |
int | layoutUnitToPixelX (int lupix) const |
int | layoutUnitToPixelY (int lupix) const |
int | layoutUnitToPixelX (int x, int w) const |
int | layoutUnitToPixelY (int y, int h) const |
QPoint | layoutUnitToPixel (const QPoint &p) const |
QRect | layoutUnitToPixel (const QRect &r) const |
int | ptToPixelX (double pt) const |
int | ptToPixelY (double pt) const |
QPoint | ptToPixel (const KoPoint &p) const |
double | pixelXToPt (int x) const |
double | pixelYToPt (int y) const |
KoPoint | pixelToPt (const QPoint &p) const |
int | ptToLayoutUnitPixX (double x_pt) const |
int | ptToLayoutUnitPixY (double y_pt) const |
QPoint | ptToLayoutUnitPix (const KoPoint &p) const |
double | layoutUnitToFontSize (int luSize, bool) const |
Protected Attributes | |
int | m_zoom |
double | m_resolutionX |
double | m_resolutionY |
double | m_zoomedResolutionX |
double | m_zoomedResolutionY |
Detailed Description
This class handles the zooming and DPI stuff (conversions between pt values and pixels).An instance of KoZoomHandler operates at a given zoom (see setZoomAndResolution() and setZoom()) so there is usually one instance of KoZoomHandler per view.
Definition at line 73 of file kozoomhandler.h.
Member Function Documentation
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Change the zoom factor to 150 for 150%) and/or change the resolution, given in DPI. This is done on startup, when zooming, and when printing. The same call combines both so that all the updating done behind the scenes is done only once, even if both zoom and DPI must be changed. Reimplemented in ContextStyle. Definition at line 37 of file kozoomhandler.cc. References setZoom(). Referenced by ContextStyle::setZoomAndResolution(). |
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Definition at line 93 of file kozoomhandler.h. |
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Zoom factor for X. Equivalent to zoomedResolutionX()/resolutionX() Definition at line 102 of file kozoomhandler.h. |
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Zoom factor for Y. Equivalent to zoomedResolutionY()/resolutionY() Definition at line 106 of file kozoomhandler.h. |
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Set a resolution for X and Y, when no zoom applies (e.g. when painting an embedded document. This will set the zoom to 100, and it will set zoomedResolution[XY] to the resolution[XY] parameters Helper method, equivalent to setZoomAndResolution(100,...). Definition at line 50 of file kozoomhandler.cc. |
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Set the zoomed resolution for X and Y. Compared to the setZoom... methods, this allows to set a different zoom factor for X and for Y. Definition at line 59 of file kozoomhandler.cc. |
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Change the zoom level, keeping the resolution unchanged.
Definition at line 68 of file kozoomhandler.cc. Referenced by setZoomAndResolution(). |
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Definition at line 134 of file kozoomhandler.h. Referenced by Container::drawImage(). |
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Returns the size in pixels for a input size in points. This function can return a size with 1 pixel to less, depending on the reference point and the width and/or the zoom level. It's save to use if the starting point is (0/0). You can use it if you don't know the starting point yet (like when inserting a picture), but then please take care of it afterwards, when you know the reference point. Definition at line 163 of file kozoomhandler.h. References KoSize::height(), and KoSize::width(). |
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The "[zoomed] view pixel" -> "layout unit pixel" conversions.
Definition at line 127 of file kozoomhandler.cc. References KoTextZoomHandler::m_layoutUnitFactor. Referenced by Container::moveTo(). |
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The "layout unit pixel" -> "[zoomed] view pixel" conversions.
Definition at line 114 of file kozoomhandler.cc. References KoTextZoomHandler::m_layoutUnitFactor. Referenced by Container::boundingRect(), Container::coveredRect(), EmptyElement::draw(), SymbolElement::draw(), SpaceElement::draw(), RootElement::draw(), MultilineElement::draw(), FractionElement::draw(), UnderlineElement::draw(), OverlineElement::draw(), BracketElement::draw(), NameSequence::drawCursor(), SequenceElement::drawCursor(), Container::drawImage(), and Container::recalc(). |
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This variant converts a width, using a reference X position. This prevents rounding problems. Definition at line 98 of file kozoomhandler.cc. |
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This variant converts a height, using a reference Y position. This prevents rounding problems. Definition at line 106 of file kozoomhandler.cc. |
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Basic pt to pixel and pixel to pt conversions, valid at any zoom level, as well as at the Layout Unit level (and mostly useful for Layout Units). Don't confuse with zoomIt, which also converts pt to pixels, but applying the zoom! Definition at line 218 of file kozoomhandler.h. Referenced by SequenceElement::calcSizes(). |
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The "document pt" -> "Layout Unit pixels" conversions, for convenience.
Definition at line 234 of file kozoomhandler.h. References KoTextZoomHandler::ptToLayoutUnitPt(). Referenced by NameSequence::drawCursor(), and ContextStyle::getLineWidth(). |
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Given the font size for the font in layout units, in pt (use pointSize()) this returns the font size to use on screen the current zoom, in pt (use setPointSizeFloat()),.
Definition at line 88 of file kozoomhandler.cc. |
The documentation for this class was generated from the following files: