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