gecko-dev/widget/gtk2/gtkdrawing.h
2012-05-21 12:12:37 +01:00

452 lines
15 KiB
C

/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
* gtkdrawing.h: GTK widget rendering utilities
*
* gtkdrawing provides an API for rendering GTK widgets in the
* current theme to a pixmap or window, without requiring an actual
* widget instantiation, similar to the Macintosh Appearance Manager
* or Windows XP's DrawThemeBackground() API.
*/
#ifndef _GTK_DRAWING_H_
#define _GTK_DRAWING_H_
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/*** type definitions ***/
typedef struct {
guint8 active;
guint8 focused;
guint8 inHover;
guint8 disabled;
guint8 isDefault;
guint8 canDefault;
/* The depressed state is for buttons which remain active for a longer period:
* activated toggle buttons or buttons showing a popup menu. */
guint8 depressed;
gint32 curpos; /* curpos and maxpos are used for scrollbars */
gint32 maxpos;
} GtkWidgetState;
typedef struct {
gint slider_width;
gint trough_border;
gint stepper_size;
gint stepper_spacing;
gint min_slider_size;
} MozGtkScrollbarMetrics;
typedef enum {
MOZ_GTK_STEPPER_DOWN = 1 << 0,
MOZ_GTK_STEPPER_BOTTOM = 1 << 1,
MOZ_GTK_STEPPER_VERTICAL = 1 << 2
} GtkScrollbarButtonFlags;
/** flags for tab state **/
typedef enum {
/* first eight bits are used to pass a margin */
MOZ_GTK_TAB_MARGIN_MASK = 0xFF,
/* bottom tabs */
MOZ_GTK_TAB_BOTTOM = 1 << 8,
/* the first tab in the group */
MOZ_GTK_TAB_FIRST = 1 << 9,
/* the selected tab */
MOZ_GTK_TAB_SELECTED = 1 << 10
} GtkTabFlags;
/** flags for menuitems **/
typedef enum {
/* menuitem is part of the menubar */
MOZ_TOPLEVEL_MENU_ITEM = 1 << 0
} GtkMenuItemFlags;
/* function type for moz_gtk_enable_style_props */
typedef gint (*style_prop_t)(GtkStyle*, const gchar*, gint);
/*** result/error codes ***/
#define MOZ_GTK_SUCCESS 0
#define MOZ_GTK_UNKNOWN_WIDGET -1
#define MOZ_GTK_UNSAFE_THEME -2
/*** checkbox/radio flags ***/
#define MOZ_GTK_WIDGET_CHECKED 1
#define MOZ_GTK_WIDGET_INCONSISTENT (1 << 1)
/*** widget type constants ***/
typedef enum {
/* Paints a GtkButton. flags is a GtkReliefStyle. */
MOZ_GTK_BUTTON,
/* Paints a GtkCheckButton. flags is a boolean, 1=checked, 0=not checked. */
MOZ_GTK_CHECKBUTTON,
/* Paints a GtkRadioButton. flags is a boolean, 1=checked, 0=not checked. */
MOZ_GTK_RADIOBUTTON,
/**
* Paints the button of a GtkScrollbar. flags is a GtkArrowType giving
* the arrow direction.
*/
MOZ_GTK_SCROLLBAR_BUTTON,
/* Paints the trough (track) of a GtkScrollbar. */
MOZ_GTK_SCROLLBAR_TRACK_HORIZONTAL,
MOZ_GTK_SCROLLBAR_TRACK_VERTICAL,
/* Paints the slider (thumb) of a GtkScrollbar. */
MOZ_GTK_SCROLLBAR_THUMB_HORIZONTAL,
MOZ_GTK_SCROLLBAR_THUMB_VERTICAL,
/* Paints a GtkScale. */
MOZ_GTK_SCALE_HORIZONTAL,
MOZ_GTK_SCALE_VERTICAL,
/* Paints a GtkScale thumb. */
MOZ_GTK_SCALE_THUMB_HORIZONTAL,
MOZ_GTK_SCALE_THUMB_VERTICAL,
/* Paints a GtkSpinButton */
MOZ_GTK_SPINBUTTON,
MOZ_GTK_SPINBUTTON_UP,
MOZ_GTK_SPINBUTTON_DOWN,
MOZ_GTK_SPINBUTTON_ENTRY,
/* Paints the gripper of a GtkHandleBox. */
MOZ_GTK_GRIPPER,
/* Paints a GtkEntry. */
MOZ_GTK_ENTRY,
/* Paints the native caret (or in GTK-speak: insertion cursor) */
MOZ_GTK_ENTRY_CARET,
/* Paints a GtkOptionMenu. */
MOZ_GTK_DROPDOWN,
/* Paints a dropdown arrow (a GtkButton containing a down GtkArrow). */
MOZ_GTK_DROPDOWN_ARROW,
/* Paints an entry in an editable option menu */
MOZ_GTK_DROPDOWN_ENTRY,
/* Paints the container part of a GtkCheckButton. */
MOZ_GTK_CHECKBUTTON_CONTAINER,
/* Paints the container part of a GtkRadioButton. */
MOZ_GTK_RADIOBUTTON_CONTAINER,
/* Paints the label of a GtkCheckButton (focus outline) */
MOZ_GTK_CHECKBUTTON_LABEL,
/* Paints the label of a GtkRadioButton (focus outline) */
MOZ_GTK_RADIOBUTTON_LABEL,
/* Paints the background of a GtkHandleBox. */
MOZ_GTK_TOOLBAR,
/* Paints a toolbar separator */
MOZ_GTK_TOOLBAR_SEPARATOR,
/* Paints a GtkToolTip */
MOZ_GTK_TOOLTIP,
/* Paints a GtkFrame (e.g. a status bar panel). */
MOZ_GTK_FRAME,
/* Paints a resize grip for a GtkWindow */
MOZ_GTK_RESIZER,
/* Paints a GtkProgressBar. */
MOZ_GTK_PROGRESSBAR,
/* Paints a progress chunk of a GtkProgressBar. */
MOZ_GTK_PROGRESS_CHUNK,
/* Paints a progress chunk of an indeterminated GtkProgressBar. */
MOZ_GTK_PROGRESS_CHUNK_INDETERMINATE,
/* Paints a progress chunk of a vertical indeterminated GtkProgressBar. */
MOZ_GTK_PROGRESS_CHUNK_VERTICAL_INDETERMINATE,
/* Paints a tab of a GtkNotebook. flags is a GtkTabFlags, defined above. */
MOZ_GTK_TAB,
/* Paints the background and border of a GtkNotebook. */
MOZ_GTK_TABPANELS,
/* Paints a GtkArrow for a GtkNotebook. flags is a GtkArrowType. */
MOZ_GTK_TAB_SCROLLARROW,
/* Paints the background and border of a GtkTreeView */
MOZ_GTK_TREEVIEW,
/* Paints treeheader cells */
MOZ_GTK_TREE_HEADER_CELL,
/* Paints sort arrows in treeheader cells */
MOZ_GTK_TREE_HEADER_SORTARROW,
/* Paints an expander for a GtkTreeView */
MOZ_GTK_TREEVIEW_EXPANDER,
/* Paints a GtkExpander */
MOZ_GTK_EXPANDER,
/* Paints the background of the menu bar. */
MOZ_GTK_MENUBAR,
/* Paints the background of menus, context menus. */
MOZ_GTK_MENUPOPUP,
/* Paints the arrow of menuitems that contain submenus */
MOZ_GTK_MENUARROW,
/* Paints an arrow in a toolbar button. flags is a GtkArrowType. */
MOZ_GTK_TOOLBARBUTTON_ARROW,
/* Paints items of menubar and popups. */
MOZ_GTK_MENUITEM,
MOZ_GTK_CHECKMENUITEM,
MOZ_GTK_RADIOMENUITEM,
MOZ_GTK_MENUSEPARATOR,
/* Paints a GtkVPaned separator */
MOZ_GTK_SPLITTER_HORIZONTAL,
/* Paints a GtkHPaned separator */
MOZ_GTK_SPLITTER_VERTICAL,
/* Paints the background of a window, dialog or page. */
MOZ_GTK_WINDOW
} GtkThemeWidgetType;
/*** General library functions ***/
/**
* Initializes the drawing library. You must call this function
* prior to using any other functionality.
* returns: MOZ_GTK_SUCCESS if there were no errors
* MOZ_GTK_UNSAFE_THEME if the current theme engine is known
* to crash with gtkdrawing.
*/
gint moz_gtk_init();
/**
* Enable GTK+ 1.2.9+ theme enhancements. You must provide a pointer
* to the GTK+ 1.2.9+ function "gtk_style_get_prop_experimental".
* styleGetProp: pointer to gtk_style_get_prop_experimental
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint moz_gtk_enable_style_props(style_prop_t styleGetProp);
/**
* Perform cleanup of the drawing library. You should call this function
* when your program exits, or you no longer need the library.
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint moz_gtk_shutdown();
#if defined(MOZ_WIDGET_GTK2)
/**
* Retrieves the colormap to use for drawables passed to moz_gtk_widget_paint.
*/
GdkColormap* moz_gtk_widget_get_colormap();
#endif
/*** Widget drawing ***/
#if defined(MOZ_WIDGET_GTK2)
/**
* Paint a widget in the current theme.
* widget: a constant giving the widget to paint
* drawable: the drawable to paint to;
* it's colormap must be moz_gtk_widget_get_colormap().
* rect: the bounding rectangle for the widget
* cliprect: a clipprect rectangle for this painting operation
* state: the state of the widget. ignored for some widgets.
* flags: widget-dependant flags; see the GtkThemeWidgetType definition.
* direction: the text direction, to draw the widget correctly LTR and RTL.
*/
gint
moz_gtk_widget_paint(GtkThemeWidgetType widget, GdkDrawable* drawable,
GdkRectangle* rect, GdkRectangle* cliprect,
GtkWidgetState* state, gint flags,
GtkTextDirection direction);
#else
gint
moz_gtk_widget_paint(GtkThemeWidgetType widget, cairo_t *cr,
GdkRectangle* rect, GdkRectangle* cliprect,
GtkWidgetState* state, gint flags,
GtkTextDirection direction);
#endif
/*** Widget metrics ***/
/**
* Get the border size of a widget
* left/right: [OUT] the widget's left/right border
* top/bottom: [OUT] the widget's top/bottom border
* direction: the text direction for the widget
* inhtml: boolean indicating whether this widget will be drawn as a HTML form control,
* in order to workaround a size issue (MOZ_GTK_BUTTON only, ignored otherwise)
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint moz_gtk_get_widget_border(GtkThemeWidgetType widget, gint* left, gint* top,
gint* right, gint* bottom, GtkTextDirection direction,
gboolean inhtml);
/**
* Get the desired size of a GtkCheckButton
* indicator_size: [OUT] the indicator size
* indicator_spacing: [OUT] the spacing between the indicator and its
* container
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint
moz_gtk_checkbox_get_metrics(gint* indicator_size, gint* indicator_spacing);
/**
* Get the desired size of a GtkRadioButton
* indicator_size: [OUT] the indicator size
* indicator_spacing: [OUT] the spacing between the indicator and its
* container
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint
moz_gtk_radio_get_metrics(gint* indicator_size, gint* indicator_spacing);
/**
* Get the inner-border value for a GtkButton widget (button or tree header)
* widget: [IN] the widget to get the border value for
* inner_border: [OUT] the inner border
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint
moz_gtk_button_get_inner_border(GtkWidget* widget, GtkBorder* inner_border);
/** Get the focus metrics for a treeheadercell, button, checkbox, or radio button.
* widget: [IN] the widget to get the focus metrics for
* interior_focus: [OUT] whether the focus is drawn around the
* label (TRUE) or around the whole container (FALSE)
* focus_width: [OUT] the width of the focus line
* focus_pad: [OUT] the padding between the focus line and children
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint
moz_gtk_widget_get_focus(GtkWidget* widget, gboolean* interior_focus,
gint* focus_width, gint* focus_pad);
/** Get the horizontal padding for the menuitem widget or checkmenuitem widget.
* horizontal_padding: [OUT] The left and right padding of the menuitem or checkmenuitem
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint
moz_gtk_menuitem_get_horizontal_padding(gint* horizontal_padding);
gint
moz_gtk_checkmenuitem_get_horizontal_padding(gint* horizontal_padding);
/**
* Some GTK themes draw their indication for the default button outside
* the button (e.g. the glow in New Wave). This gets the extra space necessary.
*
* border_top: [OUT] extra space to add above
* border_left: [OUT] extra space to add to the left
* border_bottom: [OUT] extra space to add underneath
* border_right: [OUT] extra space to add to the right
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint
moz_gtk_button_get_default_overflow(gint* border_top, gint* border_left,
gint* border_bottom, gint* border_right);
/**
* Get the desired size of a GtkScale thumb
* orient: [IN] the scale orientation
* thumb_length: [OUT] the length of the thumb
* thumb_height: [OUT] the height of the thumb
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint
moz_gtk_get_scalethumb_metrics(GtkOrientation orient, gint* thumb_length, gint* thumb_height);
/**
* Get the desired metrics for a GtkScrollbar
* metrics: [IN] struct which will contain the metrics
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint
moz_gtk_get_scrollbar_metrics(MozGtkScrollbarMetrics* metrics);
/**
* Get the desired size of a dropdown arrow button
* width: [OUT] the desired width
* height: [OUT] the desired height
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint moz_gtk_get_combo_box_entry_button_size(gint* width, gint* height);
/**
* Get the desired size of a scroll arrow widget
* width: [OUT] the desired width
* height: [OUT] the desired height
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint moz_gtk_get_tab_scroll_arrow_size(gint* width, gint* height);
/**
* Get the desired size of an arrow in a button
* width: [OUT] the desired width
* height: [OUT] the desired height
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint moz_gtk_get_arrow_size(gint* width, gint* height);
/**
* Get the desired size of a toolbar separator
* size: [OUT] the desired width
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint moz_gtk_get_toolbar_separator_width(gint* size);
/**
* Get the size of a regular GTK expander that shows/hides content
* size: [OUT] the size of the GTK expander, size = width = height.
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint moz_gtk_get_expander_size(gint* size);
/**
* Get the size of a treeview's expander (we call them twisties)
* size: [OUT] the size of the GTK expander, size = width = height.
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint moz_gtk_get_treeview_expander_size(gint* size);
/**
* Get the desired height of a menu separator
* size: [OUT] the desired height
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint moz_gtk_get_menu_separator_height(gint* size);
/**
* Get the desired size of a splitter
* orientation: [IN] GTK_ORIENTATION_HORIZONTAL or GTK_ORIENTATION_VERTICAL
* size: [OUT] width or height of the splitter handle
*
* returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
*/
gint moz_gtk_splitter_get_metrics(gint orientation, gint* size);
/**
* Retrieve an actual GTK scrollbar widget for style analysis. It will not
* be modified.
*/
GtkWidget* moz_gtk_get_scrollbar_widget(void);
/**
* Get the YTHICKNESS of a tab (notebook extension).
*/
gint moz_gtk_get_tab_thickness(void);
/**
* Get a boolean which indicates whether or not to use images in menus.
* If TRUE, use images in menus.
*/
gboolean moz_gtk_images_in_menus(void);
/**
* Get a boolean which indicates whether or not to use images in buttons.
* If TRUE, use images in buttons.
*/
gboolean moz_gtk_images_in_buttons(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif