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+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ * http://ugfx.org/license.html
+ */
+
+/**
+ * @file include/gwin/button.h
+ * @brief GWIN Graphic window subsystem header file.
+ *
+ * @defgroup Button Button
+ * @ingroup GWIN
+ *
+ * @details GWIN allows it to easily create buttons with different styles
+ * and check for different meta states such as: PRESSED, CLICKED,
+ * RELEASED etc.
+ *
+ * @pre GFX_USE_GWIN must be set to TRUE in your gfxconf.h
+ * @pre GWIN_NEED_BUTTON must be set to TRUE in your gfxconf.h
+ * @{
+ */
+
+#ifndef _GWIN_BUTTON_H
+#define _GWIN_BUTTON_H
+
+/* This file is included within "gwin/gwidget.h" */
+
+/**
+ * @brief The Event Type for a Button Event
+ */
+#define GEVENT_GWIN_BUTTON (GEVENT_GWIN_FIRST+0)
+
+/**
+ * @brief A Button Event
+ * @note There are currently no GEventGWinButton listening flags - use 0 as the flags to @p gwinAttachListener()
+ */
+typedef struct GEventGWinButton {
+ GEventType type; // The type of this event (GEVENT_GWIN_BUTTON)
+ GHandle button; // The button that has been depressed (actually triggered on release)
+} GEventGWinButton;
+
+/**
+ * @brief The button widget structure
+ * @note Do not use the members directly - treat it as a black-box.
+ */
+typedef struct GButtonObject {
+ GWidgetObject w;
+ #if GINPUT_NEED_TOGGLE
+ uint16_t toggle;
+ #endif
+} GButtonObject;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Create a button widget.
+ * @return NULL if there is no resultant drawing area, otherwise a window handle.
+ *
+ * @param[in] g The GDisplay to display this window on
+ * @param[in] gb The GButtonObject structure to initialise. If this is NULL the structure is dynamically allocated.
+ * @param[in] pInit The initialisation parameters
+ *
+ * @note The drawing color and the background color get set to the current defaults. If you haven't called
+ * @p gwinSetDefaultColor() or @p gwinSetDefaultBgColor() then these are White and Black respectively.
+ * @note The font gets set to the current default font. If you haven't called @p gwinSetDefaultFont() then there
+ * is no default font and text drawing operations will no nothing.
+ * @note A button remembers its normal drawing state. If there is a window manager then it is automatically
+ * redrawn if the window is moved or its visibility state is changed.
+ * @note A button supports mouse and a toggle input.
+ * @note When assigning a toggle, only one toggle is supported. If you try to assign more than one toggle it will
+ * forget the previous toggle. When assigning a toggle the role parameter must be 0.
+ *
+ * @api
+ */
+GHandle gwinGButtonCreate(GDisplay *g, GButtonObject *gb, const GWidgetInit *pInit);
+#define gwinButtonCreate(gb, pInit) gwinGButtonCreate(GDISP, gb, pInit)
+
+/**
+ * @brief Is the button current pressed
+ * @return TRUE if the button is depressed
+ *
+ * @param[in] gh The window handle (must be a button widget)
+ *
+ * @api
+ */
+bool_t gwinButtonIsPressed(GHandle gh);
+
+/**
+ * @brief Some custom button drawing routines
+ * @details These function may be passed to @p gwinSetCustomDraw() to get different button drawing styles
+ *
+ * @param[in] gw The widget object (in this case a button)
+ * @param[in] param A parameter passed in from the user
+ *
+ * @note In your custom button drawing function you may optionally call these
+ * standard functions and then draw your extra details on top.
+ * @note The standard functions below ignore the param parameter except for @p gwinButtonDraw_Image().
+ * @note The image custom draw function @p gwinButtonDraw_Image() uses param to pass in the gdispImage pointer.
+ * The image must be already opened before calling @p gwinSetCustomDraw(). The image should be 3
+ * times the height of the button. The button image is repeated 3 times vertically, the first (top) for
+ * the "up" image, the 2nd for the "down" image, and the third (bottom) image for the disabled state. If
+ * the disabled state is never going to be used then the image can be just 2 times the button height.
+ * No checking is done to compare the size of the button to the size of the image.
+ * Note text is drawn on top of the image.
+ * @note These custom drawing routines don't have to worry about setting clipping as the framework
+ * sets clipping to the object window prior to calling these routines.
+ *
+ * @api
+ * @{
+ */
+void gwinButtonDraw_3D(GWidgetObject *gw, void *param); // @< A standard 3D button
+#if GDISP_NEED_ARC || defined(__DOXYGEN__)
+ void gwinButtonDraw_Rounded(GWidgetObject *gw, void *param); // @< A rounded rectangle button
+#endif
+#if GDISP_NEED_ELLIPSE || defined(__DOXYGEN__)
+ void gwinButtonDraw_Ellipse(GWidgetObject *gw, void *param); // @< A circular button
+#endif
+#if GDISP_NEED_CONVEX_POLYGON || defined(__DOXYGEN__)
+ void gwinButtonDraw_ArrowUp(GWidgetObject *gw, void *param); // @< An up arrow button
+ void gwinButtonDraw_ArrowDown(GWidgetObject *gw, void *param); // @< A down arrow button
+ void gwinButtonDraw_ArrowLeft(GWidgetObject *gw, void *param); // @< A left arrow button
+ void gwinButtonDraw_ArrowRight(GWidgetObject *gw, void *param); // @< A right arrow button
+#endif
+#if GDISP_NEED_IMAGE || defined(__DOXYGEN__)
+ void gwinButtonDraw_Image(GWidgetObject *gw, void *param); // @< An image button - see the notes above on the param.
+#endif
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GWIN_BUTTON_H */
+/** @} */
+