13
0
livetrax/libs/gtkmm2/gdk/gdkmm/drawable.h

632 lines
24 KiB
C
Raw Normal View History

// -*- c++ -*-
// Generated by gtkmmproc -- DO NOT MODIFY!
#ifndef _GDKMM_DRAWABLE_H
#define _GDKMM_DRAWABLE_H
#include <glibmm.h>
/* $Id$ */
/* Copyright (C) 1998-2002 The gtkmm Development Team
*
* 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; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <gdk/gdkdrawable.h>
#include <gdk/gdkrgb.h>
#include <pangomm/font.h>
#include <pangomm/layout.h>
#include <pangomm/layoutline.h>
#include <pangomm/glyphstring.h>
#include <gdkmm/gc.h>
#include <gdkmm/image.h>
#include <gdkmm/color.h>
#include <gdkmm/region.h>
#include <gdkmm/rgbcmap.h>
#include <gdkmm/types.h>
#include <cairomm/context.h>
//#include <gdkmm/pixbuf.h>
#ifndef DOXYGEN_SHOULD_SKIP_THIS
typedef struct _GdkDrawable GdkDrawable;
typedef struct _GdkDrawableClass GdkDrawableClass;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
namespace Gdk
{ class Drawable_Class; } // namespace Gdk
namespace Gdk
{
/** @addtogroup gdkmmEnums Enums and Flags */
/**
* @ingroup gdkmmEnums
*/
enum RgbDither
{
RGB_DITHER_NONE,
RGB_DITHER_NORMAL,
RGB_DITHER_MAX
};
} // namespace Gdk
#ifndef DOXYGEN_SHOULD_SKIP_THIS
namespace Glib
{
template <>
class Value<Gdk::RgbDither> : public Glib::Value_Enum<Gdk::RgbDither>
{
public:
static GType value_type() G_GNUC_CONST;
};
} // namespace Glib
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
namespace Gdk
{
class GC;
class Pixbuf;
/** Drawing Primitives.
* Gdk::Drawable is the base class for all of the objects that accept drawing
* commands. The available drawables include pixmaps, windows, and bitmaps.
* Drawable is abstract as there is no such type on the server side.
*
* To use a drawable, create a concrete Drawable of the type you wish to use
* and a Gdk::GC (graphics context) for that Drawable. With the GC you can
* draw lines, text, arcs and such.
*
* An alternative is to create a Cairo::Context with get_cairo_context()
* while you handle the 'exposed' event of the drawable. For more about
* this, please see "Using cairo with GTK+" in the "Common questions" section
* of the GTK+ Reference Manual.
*/
class Drawable : public Glib::Object
{
#ifndef DOXYGEN_SHOULD_SKIP_THIS
public:
typedef Drawable CppObjectType;
typedef Drawable_Class CppClassType;
typedef GdkDrawable BaseObjectType;
typedef GdkDrawableClass BaseClassType;
private: friend class Drawable_Class;
static CppClassType drawable_class_;
private:
// noncopyable
Drawable(const Drawable&);
Drawable& operator=(const Drawable&);
protected:
explicit Drawable(const Glib::ConstructParams& construct_params);
explicit Drawable(GdkDrawable* castitem);
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
public:
virtual ~Drawable();
#ifndef DOXYGEN_SHOULD_SKIP_THIS
static GType get_type() G_GNUC_CONST;
static GType get_base_type() G_GNUC_CONST;
#endif
///Provides access to the underlying C GObject.
GdkDrawable* gobj() { return reinterpret_cast<GdkDrawable*>(gobject_); }
///Provides access to the underlying C GObject.
const GdkDrawable* gobj() const { return reinterpret_cast<GdkDrawable*>(gobject_); }
///Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
GdkDrawable* gobj_copy();
private:
protected:
Drawable();
public:
static Glib::RefPtr<Drawable> create();
/** Fills * @a width and * @a height with the size of @a drawable .
* @a width or @a height can be <tt>0</tt> if you only want the other one.
*
* On the X11 platform, if @a drawable is a Gdk::Window, the returned
* size is the size reported in the most-recently-processed configure
* event, rather than the current size on the X server.
* @param width Location to store drawable's width, or <tt>0</tt>.
* @param height Location to store drawable's height, or <tt>0</tt>.
*/
void get_size(int& width, int& height);
/** Obtains the bit depth of the drawable, that is, the number of bits
* that make up a pixel in the drawable's visual. Examples are 8 bits
* per pixel, 24 bits per pixel, etc.
* @return Number of bits per pixel.
*/
int get_depth() const;
/** Sets the colormap associated with @a drawable . Normally this will
* happen automatically when the drawable is created; you only need to
* use this function if the drawable-creating function did not have a
* way to determine the colormap, and you then use drawable operations
* that require a colormap. The colormap for all drawables and
* graphics contexts you intend to use together should match. i.e.
* when using a Gdk::GC to draw to a drawable, or copying one drawable
* to another, the colormaps should match.
* @param colormap A Gdk::Colormap.
*/
void set_colormap(const Glib::RefPtr<Colormap>& colormap);
/** Gets the colormap for @a drawable , if one is set; returns
* <tt>0</tt> otherwise.
* @return The colormap, or <tt>0</tt>.
*/
Glib::RefPtr<Colormap> get_colormap();
/** Gets the Gdk::Visual describing the pixel format of @a drawable .
* @return A Gdk::Visual.
*/
Glib::RefPtr<Visual> get_visual();
/** Draws a point, using the foreground color and other attributes of
* the Gdk::GC.
* @param gc A Gdk::GC.
* @param x The x coordinate of the point.
* @param y The y coordinate of the point.
*/
void draw_point(const Glib::RefPtr<const GC>& gc, int x, int y);
void draw_points(const Glib::RefPtr<const GC>& gc, const Glib::ArrayHandle<Point>& points);
/** Draws a line, using the foreground color and other attributes of
* the Gdk::GC.
* @param gc A Gdk::GC.
* @param x1 The x coordinate of the start point.
* @param y1 The y coordinate of the start point.
* @param x2 The x coordinate of the end point.
* @param y2 The y coordinate of the end point.
*/
void draw_line(const Glib::RefPtr<const GC>& gc, int x1, int y1, int x2, int y2);
void draw_lines(const Glib::RefPtr<const GC>& gc, const Glib::ArrayHandle<Point>& points);
/** Draws a rectangular outline or filled rectangle, using the foreground color
* and other attributes of the Gdk::GC.
*
* A rectangle drawn filled is 1 pixel smaller in both dimensions than a
* rectangle outlined. Calling
* <tt>gdk_draw_rectangle (window, gc, <tt>true</tt>, 0, 0, 20, 20)</tt>
* results in a filled rectangle 20 pixels wide and 20 pixels high. Calling
* <tt>gdk_draw_rectangle (window, gc, <tt>false</tt>, 0, 0, 20, 20)</tt>
* results in an outlined rectangle with corners at (0, 0), (0, 20), (20, 20),
* and (20, 0), which makes it 21 pixels wide and 21 pixels high.
* @param gc A Gdk::GC.
* @param filled <tt>true</tt> if the rectangle should be filled.
* @param x The x coordinate of the left edge of the rectangle.
* @param y The y coordinate of the top edge of the rectangle.
* @param width The width of the rectangle.
* @param height The height of the rectangle.
*/
void draw_rectangle(const Glib::RefPtr<const GC>& gc, bool filled, int x, int y, int width, int height);
/** Draws an arc or a filled 'pie slice'. The arc is defined by the bounding
* rectangle of the entire ellipse, and the start and end angles of the part
* of the ellipse to be drawn.
* @param gc A Gdk::GC.
* @param filled <tt>true</tt> if the arc should be filled, producing a 'pie slice'.
* @param x The x coordinate of the left edge of the bounding rectangle.
* @param y The y coordinate of the top edge of the bounding rectangle.
* @param width The width of the bounding rectangle.
* @param height The height of the bounding rectangle.
* @param angle1 The start angle of the arc, relative to the 3 o'clock position,
* counter-clockwise, in 1/64ths of a degree.
* @param angle2 The end angle of the arc, relative to @a angle1 , in 1/64ths
* of a degree.
*/
void draw_arc(const Glib::RefPtr<const GC>& gc, bool filled, int x, int y, int width, int height, int angle1, int angle2);
void draw_polygon(const Glib::RefPtr<const GC>& gc, bool filled, const Glib::ArrayHandle<Point>& points);
/** Copies the @a width x @a height region of @a src at coordinates ( @a xsrc ,
* @a ysrc ) to coordinates ( @a xdest , @a ydest ) in @a drawable .
* @a width and/or @a height may be given as -1, in which case the entire
* @a src drawable will be copied.
*
* Most fields in @a gc are not used for this operation, but notably the
* clip mask or clip region will be honored.
*
* The source and destination drawables must have the same visual and
* colormap, or errors will result. (On X11, failure to match
* visual/colormap results in a BadMatch error from the X server.)
* A common cause of this problem is an attempt to draw a bitmap to
* a color drawable. The way to draw a bitmap is to set the bitmap as
* the stipple on the Gdk::GC, set the fill mode to Gdk::STIPPLED, and
* then draw the rectangle.
* @param gc A Gdk::GC sharing the drawable's visual and colormap.
* @param src The source Gdk::Drawable, which may be the same as @a drawable .
* @param xsrc X position in @a src of rectangle to draw.
* @param ysrc Y position in @a src of rectangle to draw.
* @param xdest X position in @a drawable where the rectangle should be drawn.
* @param ydest Y position in @a drawable where the rectangle should be drawn.
* @param width Width of rectangle to draw, or -1 for entire @a src width.
* @param height Height of rectangle to draw, or -1 for entire @a src height.
*/
void draw_drawable(const Glib::RefPtr<const GC>& gc, const Glib::RefPtr<const Drawable>& src, int xsrc, int ysrc, int xdest, int ydest, int width = -1, int height = -1);
/** Draws a Gdk::Image onto a drawable.
* The depth of the Gdk::Image must match the depth of the Gdk::Drawable.
* @param gc A Gdk::GC.
* @param image The Gdk::Image to draw.
* @param xsrc The left edge of the source rectangle within @a image .
* @param ysrc The top of the source rectangle within @a image .
* @param xdest The x coordinate of the destination within @a drawable .
* @param ydest The y coordinate of the destination within @a drawable .
* @param width The width of the area to be copied, or -1 to make the area
* extend to the right edge of @a image .
* @param height The height of the area to be copied, or -1 to make the area
* extend to the bottom edge of @a image .
*/
void draw_image(const Glib::RefPtr<const GC>& gc, const Glib::RefPtr<const Image>& image, int xsrc, int ysrc, int xdest, int ydest, int width = -1, int height = -1);
//segs is an array, and this function will be used so little that it doesn't seem worth wrapping it to use a container of C++ types.
/** Draws a number of unconnected lines.
* @param gc A Gdk::GC.
* @param segs An array of Gdk::Segment structures specifying the start and
* end points of the lines to be drawn.
* @param nsegs The number of line segments to draw, i.e. the size of the
* @a segs array.
*/
void draw_segments(const Glib::RefPtr<const GC>& gc, GdkSegment* segs, int nsegs); // TODO
//glyphs is not an array. I went down to pango_xft_render in pango and saw that PangoGlyphString here is not an array. -Bryan
/** This is a low-level function; 99% of text rendering should be done
* using gdk_draw_layout() instead.
*
* A glyph is a single image in a font. This function draws a sequence of
* glyphs. To obtain a sequence of glyphs you have to understand a
* lot about internationalized text handling, which you don't want to
* understand; thus, use gdk_draw_layout() instead of this function,
* gdk_draw_layout() handles the details.
* @param gc A Gdk::GC.
* @param font Font to be used.
* @param x X coordinate of baseline origin.
* @param y Y coordinate of baseline origin.
* @param glyphs The glyph string to draw.
*/
void draw_glyphs(const Glib::RefPtr<const GC>& gc, const Glib::RefPtr<const Pango::Font>& font, int x, int y, const Pango::GlyphString& glyphs);
/** Render a Pango::LayoutLine onto an GDK drawable
*
* If the layout's Pango::Context has a transformation matrix set, then
* @a x and @a y specify the position of the left edge of the baseline
* (left is in before-tranform user coordinates) in after-transform
* device coordinates.
* @param gc Base graphics to use.
* @param x The x position of start of string (in pixels).
* @param y The y position of baseline (in pixels).
* @param line A Pango::LayoutLine.
*/
void draw_layout_line(const Glib::RefPtr<const GC>& gc, int x, int y, const Glib::RefPtr<const Pango::LayoutLine>& line);
/** Render a Pango::LayoutLine onto a Gdk::Drawable, overriding the
* layout's normal colors with @a foreground and/or @a background .
* @a foreground and @a background need not be allocated.
*
* If the layout's Pango::Context has a transformation matrix set, then
* @a x and @a y specify the position of the left edge of the baseline
* (left is in before-tranform user coordinates) in after-transform
* device coordinates.
* @param gc Base graphics to use.
* @param x The x position of start of string (in pixels).
* @param y The y position of baseline (in pixels).
* @param line A Pango::LayoutLine.
* @param foreground Foreground override color, or <tt>0</tt> for none.
* @param background Background override color, or <tt>0</tt> for none.
*/
void draw_layout_line(const Glib::RefPtr<const GC>& gc, int x, int y, const Glib::RefPtr<const Pango::LayoutLine>& line, const Color& foreground, const Color& background);
/** Render a Pango::Layout onto a GDK drawable
*
* If the layout's Pango::Context has a transformation matrix set, then
* @a x and @a y specify the position of the top left corner of the
* bounding box (in device space) of the transformed layout.
*
* If you're using GTK+, the usual way to obtain a Pango::Layout
* is gtk_widget_create_pango_layout().
* @param gc Base graphics context to use.
* @param x The X position of the left of the layout (in pixels).
* @param y The Y position of the top of the layout (in pixels).
* @param layout A Pango::Layout.
*/
void draw_layout(const Glib::RefPtr<const GC>& gc, int x, int y, const Glib::RefPtr<const Pango::Layout>& layout);
/** Render a Pango::Layout onto a Gdk::Drawable, overriding the
* layout's normal colors with @a foreground and/or @a background .
* @a foreground and @a background need not be allocated.
*
* If the layout's Pango::Context has a transformation matrix set, then
* @a x and @a y specify the position of the top left corner of the
* bounding box (in device space) of the transformed layout.
*
* If you're using GTK+, the ususal way to obtain a Pango::Layout
* is gtk_widget_create_pango_layout().
* @param gc Base graphics context to use.
* @param x The X position of the left of the layout (in pixels).
* @param y The Y position of the top of the layout (in pixels).
* @param layout A Pango::Layout.
* @param foreground Foreground override color, or <tt>0</tt> for none.
* @param background Background override color, or <tt>0</tt> for none.
*/
void draw_layout(const Glib::RefPtr<const GC>& gc, int x, int y, const Glib::RefPtr<const Pango::Layout>& layout, const Color& foreground, const Color& background);
/** Renders a rectangular portion of a pixbuf to a drawable. The destination
* drawable must have a colormap. All windows have a colormap, however, pixmaps
* only have colormap by default if they were created with a non-<tt>0</tt> window
* argument. Otherwise a colormap must be set on them with
* Gdk::Drawable::set_colormap().
*
* On older X servers, rendering pixbufs with an alpha channel involves round
* trips to the X server, and may be somewhat slow.
*
* The clip mask of @a gc is ignored, but clip rectangles and clip regions work
* fine.
*
* If GDK is built with the Sun mediaLib library, the gdk_draw_pixbuf
* function is accelerated using mediaLib, which provides hardware
* acceleration on Intel, AMD, and Sparc chipsets. If desired, mediaLib
* support can be turned off by setting the GDK_DISABLE_MEDIALIB environment
* variable.
*
* @newin2p2
* @param gc A Gdk::GC, used for clipping, or <tt>0</tt>.
* @param pixbuf A Gdk::Pixbuf.
* @param src_x Source X coordinate within pixbuf.
* @param src_y Source Y coordinates within pixbuf.
* @param dest_x Destination X coordinate within drawable.
* @param dest_y Destination Y coordinate within drawable.
* @param width Width of region to render, in pixels, or -1 to use pixbuf width.
* @param height Height of region to render, in pixels, or -1 to use pixbuf height.
* @param dither Dithering mode for Gdk::RGB.
* @param x_dither X offset for dither.
* @param y_dither Y offset for dither.
*/
void draw_pixbuf(const Glib::RefPtr<const GC>& gc, const Glib::RefPtr<Pixbuf>& pixbuf,
int src_x, int src_y, int dest_x, int dest_y,
int width, int height,
RgbDither dither, int x_dither, int y_dither);
// Note: This has no 'refreturn' because get_image() returns a newly created Image object.
/** A Gdk::Image stores client-side image data (pixels). In contrast,
* Gdk::Pixmap and Gdk::Window are server-side
* objects. get_image() obtains the pixels from a
* server-side drawable as a client-side Gdk::Image. The format of a
* Gdk::Image depends on the Gdk::Visual of the current display, which
* makes manipulating Gdk::Image extremely difficult; therefore, in
* most cases you should use the Gdk::Pixbuf::create() method that takes a Gdk::Drawable,
* instead of this lower-level function. A Gdk::Pixbuf contains image data in a
* canonicalized RGB format, rather than a display-dependent format.
* Of course, there's a convenience vs. speed tradeoff here, so you'll
* want to think about what makes sense for your application.
*
* @a x , @a y , @a width , and @a height define the region of @a drawable to
* obtain as an image.
*
* You would usually copy image data to the client side if you intend
* to examine the values of individual pixels, for example to darken
* an image or add a red tint. It would be prohibitively slow to
* make a round-trip request to the windowing system for each pixel,
* so instead you get all of them at once, modify them, then copy
* them all back at once.
*
* If the X server or other windowing system backend is on the local
* machine, this function may use shared memory to avoid copying
* the image data.
*
* If the source drawable is a Gdk::Window and partially offscreen
* or obscured, then the obscured portions of the returned image
* will contain undefined data.
* @param x X coordinate on @a drawable .
* @param y Y coordinate on @a drawable .
* @param width Width of region to get.
* @param height Height or region to get.
* @return A Gdk::Image containing the contents of @a drawable .
*/
Glib::RefPtr<Image> get_image(int x, int y, int width, int height) const;
// gdk_drawable_copy_to_image() returns a new GdkImage when the image parameter is NULL, but that seems to be much the
// same as gdk_drawable_get_image().
void copy_to_image(const Glib::RefPtr<Image>& image, int src_x, int src_y, int dest_x, int dest_y, int width, int height) const;
/** Computes the region of a drawable that potentially can be written
* to by drawing primitives. This region will not take into account
* the clip region for the GC, and may also not take into account
* other factors such as if the window is obscured by other windows,
* but no area outside of this region will be affected by drawing
* primitives.
* @return A Gdk::Region. This must be freed with gdk_region_destroy()
* when you are done.
*/
Region get_clip_region() const;
/** Computes the region of a drawable that is potentially visible.
* This does not necessarily take into account if the window is
* obscured by other windows, but no area outside of this region
* is visible.
* @return A Gdk::Region. This must be freed with gdk_region_destroy()
* when you are done.
*/
Region get_visible_region() const;
// **** RGB stuff ****
void draw_rgb_image(
const Glib::RefPtr<const GC>& gc,
int x, int y, int width, int height,
RgbDither dith, const guchar* rgb_buf, int rowstride);
void draw_rgb_image_dithalign(
const Glib::RefPtr<const GC>& gc,
int x, int y, int width, int height,
RgbDither dith, const guchar* rgb_buf, int rowstride,
int xdith, int ydith);
void draw_rgb_32_image(
const Glib::RefPtr<const GC>& gc,
int x, int y, int width, int height,
RgbDither dith, const guchar* rgb_buf, int rowstride);
/** Like gdk_draw_rgb_32_image(), but allows you to specify the dither
* offsets. See gdk_draw_rgb_image_dithalign() for more details.
* @param gc A Gdk::GC.
* @param x X coordinate on @a drawable where image should go.
* @param y Y coordinate on @a drawable where image should go.
* @param width Width of area of image to draw.
* @param height Height of area of image to draw.
* @param dith Dithering mode.
* @param buf RGB image data.
* @param rowstride Rowstride of RGB image data.
* @param xdith X dither offset.
* @param ydith Y dither offset.
*/
void draw_rgb_32_image_dithalign(
const Glib::RefPtr<const GC>& gc,
int x, int y, int width, int height,
RgbDither dith, const guchar* buf, int rowstride,
int xdith, int ydith);
void draw_gray_image(
const Glib::RefPtr<const GC>& gc,
int x, int y, int width, int height,
RgbDither dith, const guchar* rgb_buf, int rowstride);
void draw_indexed_image(
const Glib::RefPtr<const GC>& gc,
int x, int y, int width, int height,
RgbDither dith, const guchar* rgb_buf, int rowstride,
const RgbCmap& cmap);
/** Gets the Gdk::Screen associated with a Gdk::Drawable.
* @return The Gdk::Screen associated with @a drawable
*
* @newin2p2.
*/
Glib::RefPtr<Screen> get_screen();
/** Gets the Gdk::Screen associated with a Gdk::Drawable.
* @return The Gdk::Screen associated with @a drawable
*
* @newin2p2.
*/
Glib::RefPtr<const Screen> get_screen() const;
/** Gets the Gdk::Display associated with a Gdk::Drawable.
* @return The Gdk::Display associated with @a drawable
*
* @newin2p2.
*/
Glib::RefPtr<Display> get_display();
/** Gets the Gdk::Display associated with a Gdk::Drawable.
* @return The Gdk::Display associated with @a drawable
*
* @newin2p2.
*/
Glib::RefPtr<const Display> get_display() const;
/** Creates a Cairo context for drawing to @a drawable .
* @return A newly created Cairo context.
*
* @newin2p10.
*/
Cairo::RefPtr<Cairo::Context> create_cairo_context();
public:
public:
//C++ methods used to invoke GTK+ virtual functions:
#ifdef GLIBMM_VFUNCS_ENABLED
#endif //GLIBMM_VFUNCS_ENABLED
protected:
//GTK+ Virtual Functions (override these to change behaviour):
#ifdef GLIBMM_VFUNCS_ENABLED
#endif //GLIBMM_VFUNCS_ENABLED
//Default Signal Handlers::
#ifdef GLIBMM_DEFAULT_SIGNAL_HANDLERS_ENABLED
#endif //GLIBMM_DEFAULT_SIGNAL_HANDLERS_ENABLED
};
} // namespace Gdk
namespace Glib
{
/** A Glib::wrap() method for this object.
*
* @param object The C instance.
* @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
* @result A C++ instance that wraps this C instance.
*
* @relates Gdk::Drawable
*/
Glib::RefPtr<Gdk::Drawable> wrap(GdkDrawable* object, bool take_copy = false);
}
#endif /* _GDKMM_DRAWABLE_H */