Renderer

pango.renderer.Renderer is a base class for objects that can render text provided as pango.glyph_string.GlyphString or pango.layout.Layout.

By subclassing pango.renderer.Renderer and overriding operations such as @draw_glyphs and @draw_rectangle, renderers for particular font backends and destinations can be created.

class Renderer : ObjectG {

void activate();

void deactivate();

void drawErrorUnderline(int x, int y, int width, int height);

void drawGlyph(pango.font.Font font, pango.types.Glyph glyph, double x, double y);

void drawGlyphItem(string text, pango.glyph_item.GlyphItem glyphItem, int x, int y);

void drawGlyphs(pango.font.Font font, pango.glyph_string.GlyphString glyphs, int x, int y);

void drawLayout(pango.layout.Layout layout, int x, int y);

void drawLayoutLine(pango.layout_line.LayoutLine line, int x, int y);

void drawRectangle(pango.types.RenderPart part, int x, int y, int width, int height);

void drawTrapezoid(pango.types.RenderPart part, double y1, double x11, double x21, double y2, double x12, double x22);

ushort getAlpha(pango.types.RenderPart part);

pango.color.Color getColor(pango.types.RenderPart part);

pango.layout.Layout getLayout();

pango.layout_line.LayoutLine getLayoutLine();

pango.matrix.Matrix getMatrix();

void partChanged(pango.types.RenderPart part);

void setAlpha(pango.types.RenderPart part, ushort alpha);

void setColor(pango.types.RenderPart part, pango.color.Color color);

void setMatrix(pango.matrix.Matrix matrix);

}

Members

Functions

activate void activate(): Does initial setup before rendering operations on renderer.
deactivate void deactivate(): Cleans up after rendering operations on renderer.
drawErrorUnderline void drawErrorUnderline(int x, int y, int width, int height): Draw a squiggly line that approximately covers the given rectangle in the style of an underline used to indicate a spelling error.
drawGlyph void drawGlyph(pango.font.Font font, pango.types.Glyph glyph, double x, double y): Draws a single glyph with coordinates in device space.
drawGlyphItem void drawGlyphItem(string text, pango.glyph_item.GlyphItem glyphItem, int x, int y): Draws the glyphs in glyph_item with the specified pango.renderer.Renderer, embedding the text associated with the glyphs in the output if the output format supports it.
drawGlyphs void drawGlyphs(pango.font.Font font, pango.glyph_string.GlyphString glyphs, int x, int y): Draws the glyphs in glyphs with the specified pango.renderer.Renderer.
drawLayout void drawLayout(pango.layout.Layout layout, int x, int y): Draws layout with the specified pango.renderer.Renderer.
drawLayoutLine void drawLayoutLine(pango.layout_line.LayoutLine line, int x, int y): Draws line with the specified pango.renderer.Renderer.
drawRectangle void drawRectangle(pango.types.RenderPart part, int x, int y, int width, int height): Draws an axis-aligned rectangle in user space coordinates with the specified pango.renderer.Renderer.
drawTrapezoid void drawTrapezoid(pango.types.RenderPart part, double y1, double x11, double x21, double y2, double x12, double x22): Draws a trapezoid with the parallel sides aligned with the X axis using the given pango.renderer.Renderer; coordinates are in device space.
getAlpha ushort getAlpha(pango.types.RenderPart part): Gets the current alpha for the specified part.
getColor pango.color.Color getColor(pango.types.RenderPart part): Gets the current rendering color for the specified part.
getLayout pango.layout.Layout getLayout(): Gets the layout currently being rendered using renderer.
getLayoutLine pango.layout_line.LayoutLine getLayoutLine(): Gets the layout line currently being rendered using renderer.
getMatrix pango.matrix.Matrix getMatrix(): Gets the transformation matrix that will be applied when rendering.
partChanged void partChanged(pango.types.RenderPart part): Informs Pango that the way that the rendering is done for part has changed.
setAlpha void setAlpha(pango.types.RenderPart part, ushort alpha): Sets the alpha for part of the rendering.
setColor void setColor(pango.types.RenderPart part, pango.color.Color color): Sets the color for part of the rendering.
setMatrix void setMatrix(pango.matrix.Matrix matrix): Sets the transformation matrix that will be applied when rendering.

Inherited Members

From ObjectG

setGObject void setGObject(void* cObj, Flag!"Take" take): Set the GObject of a D ObjectG wrapper.
cPtr void* cPtr(Flag!"Dup" dup): Get a pointer to the underlying C object.
ref_ void* ref_(void* gObj): Calls g_object_ref() on a GObject.
unref unref(void* gObj): Calls g_object_unref() on a GObject.
getType GType getType(): Get the GType of an object.
gType GType gType [@property getter]: GObject GType property.
self ObjectG self(): Convenience method to return this cast to a type. For use in D with statements.
getDObject T getDObject(void* cptr, Flag!"Take" take): Template to get the D object from a C GObject and cast it to the given D object type.
connectSignalClosure ulong connectSignalClosure(string signalDetail, DClosure closure, Flag!"After" after): Connect a D closure to an object signal.
setProperty void setProperty(string propertyName, T val): Template for setting a GObject property.
getProperty T getProperty(string propertyName): Template for getting a GObject property.
compatControl size_t compatControl(size_t what, void* data)
bindProperty gobject.binding.Binding bindProperty(string sourceProperty, gobject.object.ObjectG target, string targetProperty, gobject.types.BindingFlags flags): Creates a binding between source_property on source and target_property on target.
bindPropertyFull gobject.binding.Binding bindPropertyFull(string sourceProperty, gobject.object.ObjectG target, string targetProperty, gobject.types.BindingFlags flags, gobject.closure.Closure transformTo, gobject.closure.Closure transformFrom): Creates a binding between source_property on source and target_property on target, allowing you to set the transformation functions to be used by the binding.
forceFloating void forceFloating(): This function is intended for #GObject implementations to re-enforce a floating[floating-ref] object reference. Doing this is seldom required: all #GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling gobject.object.ObjectG.refSink.
freezeNotify void freezeNotify(): Increases the freeze count on object. If the freeze count is non-zero, the emission of "notify" signals on object is stopped. The signals are queued until the freeze count is decreased to zero. Duplicate notifications are squashed so that at most one #GObject::notify signal is emitted for each property modified while the object is frozen.
getData void* getData(string key): Gets a named field from the objects table of associations (see gobject.object.ObjectG.setData).
getProperty void getProperty(string propertyName, gobject.value.Value value): Gets a property of an object.
getQdata void* getQdata(glib.types.Quark quark): This function gets back user data pointers stored via gobject.object.ObjectG.setQdata.
getv void getv(string[] names, gobject.value.Value[] values): Gets n_properties properties for an object. Obtained properties will be set to values. All properties must be valid. Warnings will be emitted and undefined behaviour may result if invalid properties are passed in.
isFloating bool isFloating(): Checks whether object has a floating[floating-ref] reference.
notify void notify(string propertyName): Emits a "notify" signal for the property property_name on object.
notifyByPspec void notifyByPspec(gobject.param_spec.ParamSpec pspec): Emits a "notify" signal for the property specified by pspec on object.
refSink gobject.object.ObjectG refSink(): Increase the reference count of object, and possibly remove the floating[floating-ref] reference, if object has a floating reference.
runDispose void runDispose(): Releases all references to other objects. This can be used to break reference cycles.
setData void setData(string key, void* data): Each object carries around a table of associations from strings to pointers. This function lets you set an association.
setProperty void setProperty(string propertyName, gobject.value.Value value): Sets a property on an object.
stealData void* stealData(string key): Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
stealQdata void* stealQdata(glib.types.Quark quark): This function gets back user data pointers stored via gobject.object.ObjectG.setQdata and removes the data from object without invoking its destroy() function (if any was set). Usually, calling this function is only required to update user data pointers with a destroy notifier, for example:
thawNotify void thawNotify(): Reverts the effect of a previous call to gobject.object.ObjectG.freezeNotify. The freeze count is decreased on object and when it reaches zero, queued "notify" signals are emitted.
watchClosure void watchClosure(gobject.closure.Closure closure): This function essentially limits the life time of the closure to the life time of the object. That is, when the object is finalized, the closure is invalidated by calling gobject.closure.Closure.invalidate on it, in order to prevent invocations of the closure with a finalized (nonexisting) object. Also, gobject.object.ObjectG.ref_ and gobject.object.ObjectG.unref are added as marshal guards to the closure, to ensure that an extra reference count is held on object during invocation of the closure. Usually, this function will be called on closures that use this object as closure data.
connectNotify ulong connectNotify(string detail, T callback, Flag!"After" after): Connect to Notify signal.

pango renderer classes

Renderer