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Diffstat (limited to 'src/gwin/gwin.h')
| -rw-r--r-- | src/gwin/gwin.h | 1026 |
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diff --git a/src/gwin/gwin.h b/src/gwin/gwin.h new file mode 100644 index 00000000..81bf38e5 --- /dev/null +++ b/src/gwin/gwin.h @@ -0,0 +1,1026 @@ +/* + * 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 src/gwin/gwin.h + * + * @defgroup Window Window + * @ingroup Windows + * + * @details GWIN provides a basic window manager which allows it to easily + * create and destroy different windows at runtime. Each window + * will have it's own properties such as colors as well as + * it's own drawing origin. + * + * @pre GFX_USE_GWIN must be set to TRUE in your gfxconf.h + * @{ + */ + +#ifndef _GWIN_H +#define _GWIN_H + +#include "gfx.h" + +#if GFX_USE_GWIN || defined(__DOXYGEN__) + +/* Forward declaration */ +typedef struct GWindowObject *GHandle; + +/** + * @brief A window object structure + * @note Do not access the members directly. Treat it as a black-box and use the method functions. + * @{ + */ +typedef struct GWindowObject { + #if GWIN_NEED_WINDOWMANAGER + // This MUST be the first member of the structure + gfxQueueASyncItem wmq; // @< The next window (for the window manager) + #endif + const struct gwinVMT *vmt; // @< The VMT for this GWIN + GDisplay * display; // @< The display this window is on. + coord_t x, y; // @< Screen relative position + coord_t width, height; // @< Dimensions of this window + color_t color, bgcolor; // @< The current drawing colors + uint32_t flags; // @< Window flags (the meaning is private to the GWIN class) + #if GDISP_NEED_TEXT + font_t font; // @< The current font + #endif + #if GWIN_NEED_CONTAINERS + GHandle parent; // @< The parent window + #endif +} GWindowObject, * GHandle; +/** @} */ + +/** + * @brief The structure to initialise a GWIN. + * + * @note Some gwin's will need extra parameters. + * @note The dimensions and position may be changed to fit on the real screen. + * @note If you create this structure on the stack, you should always memset + * it to all zero's first in case a future version of the software + * add's extra fields. Alternatively you can use @p gwinClearInit() + * to clear it. + * + * @{ + */ +typedef struct GWindowInit { + coord_t x, y; // @< The initial position relative to its parent + coord_t width, height; // @< The initial dimension + bool_t show; // @< Should the window be visible initially + #if GWIN_NEED_CONTAINERS + GHandle parent; // @< The parent - must be a container or NULL + #endif +} GWindowInit; +/** @} */ + +/** + * @brief A window's minimized, maximized or normal size + */ +typedef enum { GWIN_NORMAL, GWIN_MAXIMIZE, GWIN_MINIMIZE } GWindowMinMax; + +#ifdef __cplusplus +extern "C" { +#endif + +/*------------------------------------------------- + * Window Manager functions + *-------------------------------------------------*/ + +#if GWIN_NEED_WINDOWMANAGER || defined(__DOXYGEN__) + // Forward definition + struct GWindowManager; + + /** + * @brief Set the window manager for the GWIN system. + * + * @param[in] gwm The window manager to use. Can be NULL to turn off the existing window manager. + * + * @note A window manager is responsible for handling when window visibility is changed or + * a window is resized for moved. Note that only saved window states will be redrawn. Each + * window type can save different information (or none at all). See the documentation on each window + * type to see which information it saves (and can therefore be automatically redrawn). + * For window types that do not save any state information, the window manager determines what to do. + * Generally it will just clear the window to its background color. + * + * @api + */ + void gwinSetWindowManager(struct GWindowManager *gwm); +#endif + +/*------------------------------------------------- + * Functions that affect all windows + *-------------------------------------------------*/ + + /** + * @brief Clear a GWindowInit structure to all zero's + * @note This function is provided just to prevent problems + * on operating systems where using memset() causes issues + * in the users application. + * + * @param[in] pwi The GWindowInit structure to clear + * + * @api + */ + void gwinClearInit(GWindowInit *pwi); + + /** + * @brief Set the default foreground color for all new GWIN windows + * + * @param[in] clr The color to be set + * + * @api + */ + void gwinSetDefaultColor(color_t clr); + + /** + * @brief Get the default foreground color for all new GWIN windows + * + * @return The current default color for all new GWIN windows + * + * @api + */ + color_t gwinGetDefaultColor(void); + + /** + * @brief Set the default background color for all new GWIN windows + * + * @param[in] bgclr The background color + * + * @api + */ + void gwinSetDefaultBgColor(color_t bgclr); + + /** + * @brief Get the default background color for all new GWIN windows + * + * @return The current default background color for all new GWIN windows + * + * @api + */ + color_t gwinGetDefaultBgColor(void); + + #if GDISP_NEED_TEXT || defined(__DOXYGEN__) + /** + * @brief Set the default font for all new GWIN windows + * + * @param[in] font The new font to be set + * + * @api + */ + void gwinSetDefaultFont(font_t font); + + /** + * @brief Get the current default font + * + * @return The current default font + * + * @api + */ + font_t gwinGetDefaultFont(void); + #endif + +/*------------------------------------------------- + * Base functions + *-------------------------------------------------*/ + + /** + * @brief Create a basic window. + * @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] pgw The window structure to initialize. If this is NULL the structure is dynamically allocated. + * @param[in] pInit How to initialise the window + * + * @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 basic window does not save the drawing state. It is not automatically redrawn if the window is moved or + * its visibility state is changed. + * + * @api + */ + GHandle gwinGWindowCreate(GDisplay *g, GWindowObject *pgw, const GWindowInit *pInit); + #define gwinWindowCreate(pgw, pInit) gwinGWindowCreate(GDISP, pgw, pInit); + + /** + * @brief Destroy a window (of any type). Releases any dynamically allocated memory. + * + * @param[in] gh The window handle + * + * @api + */ + void gwinDestroy(GHandle gh); + + /** + * @brief Get the real class name of the GHandle + * @details Returns a string describing the object class. + * + * @param[in] gh The window + * + * @return A string describing the object class. + * + * @api + */ + const char* gwinGetClassName(GHandle gh); + + /** + * @brief Get an ID that uniquely describes the class of the GHandle + * + * @param[in] gh The window + * + * @api + */ + #define gwinGetClassID(gh) ((void *)((gh)->vmt)) + + /** + * @brief Get the X coordinate of the window + * @details Returns the X coordinate of the origin of the window. + * The coordinate is relative to the physical screen zero point. + * + * @param[in] gh The window + * + * @api + */ + #define gwinGetScreenX(gh) ((gh)->x) + + /** + * @brief Get the Y coordinate of the window + * @details Returns the Y coordinate of the origin of the window. + * The coordinate is relative to the physical screen zero point. + * + * @param[in] gh The window + * + * @api + */ + #define gwinGetScreenY(gh) ((gh)->y) + + /** + * @brief Get the width of the window + * + * @param[in] gh The window + * + * @api + */ + #define gwinGetWidth(gh) ((gh)->width) + + /** + * @brief Get the height of the window + * + * @param[in] gh The window + * + * @api + */ + #define gwinGetHeight(gh) ((gh)->height) + + /** + * @brief Set foreground color + * @details Set the color which will be used to draw + * + * @param[in] gh The window + * @param[in] clr The color to be set + * + * @api + */ + #define gwinSetColor(gh, clr) (gh)->color = (clr) + + /** + * @brief Set background color + * @details Set the color which will be used as background + * @note gwinClear() must be called to set the background color + * + * @param[in] gh The window + * @param[in] bgclr The background color + * + * @api + */ + #define gwinSetBgColor(gh, bgclr) (gh)->bgcolor = (bgclr) + + /** + * @brief Get the foreground color of a window + * + * @param[in] gh The window + * + * @api + */ + #define gwinGetColor(gh) (gh)->color + + /** + * @brief Get the background color of a window + * + * @param[in] gh The window + * + * @api + */ + #define gwinGetBgColor(gh) (gh)->bgcolor + + /** + * @brief Sets whether a window is visible or not + * + * @param[in] gh The window + * @param[in] visible Whether the window should be visible or not + * + * @note When a window is marked as not visible, drawing operations + * on the window do nothing. + * @note When a window is marked as visible, it is not automatically + * redrawn as many window types don't remember their drawing state. + * Widgets such as Buttons, Sliders etc will be redrawn. + * @note If there is no window manager in use, when a window is marked + * as not visible, nothing is done to remove the window from the screen. + * When there is a window manager, it is up to the window manager to + * handle what happens. + * @note Even when you mark a window as visible, it may still not be displayed + * if it's parent is invisible. When the parent becomes visible this child + * will automatically be shown because it is already marked as visible. + * + * @api + */ + void gwinSetVisible(GHandle gh, bool_t visible); + + /** + * @brief Makes a widget become visible + * + * @param[in] gh The window handle + * + * @api + */ + #define gwinShow(gh) gwinSetVisible(gh, TRUE) + + /** + * @brief Makes a widget become invisible + * + * @param[in] gh The window handle + * + * @api + */ + #define gwinHide(gh) gwinSetVisible(gh, FALSE) + + /** + * @brief Gets the visibility of a window + * @return TRUE if visible + * + * @note It is possible for a child to be marked as visible by @p gwinSetVisible() + * but for this call to return FALSE if one of its parents are not visible. + * + * @param[in] gh The window + * + * @api + */ + bool_t gwinGetVisible(GHandle gh); + + /** + * @brief Enable or disable a window + * + * @param[in] gh The window handle + * @param[in] enabled Enable or disable the window + * + * @note The window is automatically redrawn if it supports self-redrawing. + * @note Even when you mark a window as enabled, it may still remain disabled + * if it's parent is disabled. When the parent becomes enabled this child + * will automatically be enabled because it is already marked as enabled. + * + * @api + */ + void gwinSetEnabled(GHandle gh, bool_t enabled); + + /** + * @brief Enables a widget + * + * @param[in] gh The window handle + * + * @api + */ + #define gwinEnable(gh) gwinSetEnabled(gh, TRUE) + + /** + * @brief Disables a widget + * + * @param[in] gh The window handle + * + * @api + */ + #define gwinDisable(gh) gwinSetEnabled(gh, FALSE) + + /** + * @brief Gets the enabled state of a window + * @return TRUE if enabled + * + * @note It is possible for a child to be marked as enabled by @p gwinSetEnabled() + * but for this call to return FALSE if one of its parents are not enabled. + * + * @param[in] gh The window + * + * @api + */ + bool_t gwinGetEnabled(GHandle gh); + + /** + * @brief Move a window + * + * @param[in] gh The window + * @param[in] x, y The new position (screen relative) for this window + * + * @note The final window position may not be the requested position. Windows + * are clipped to the screen area and the window manager may also affect the position. + * @note The window is redrawn if it is visible. See the comments in @p gwinSetVisible() + * with regard to what can be redrawn and what can't. + * @note It is up to the window manager to determine what happens with the screen area + * uncovered by moving the window. When there is no window manager, nothing + * is done with the uncovered area. + * + * @api + */ + void gwinMove(GHandle gh, coord_t x, coord_t y); + + /** + * @brief Resize a window + * + * @param[in] gh The window + * @param[in] width, height The new size of the window + * + * @note The final window size may not be the requested size. Windows + * are clipped to the screen area and the window manager may also affect the size. + * @note The window is redrawn if it is visible. See the comments in @p gwinSetVisible() + * with regard to what can be redrawn and what can't. + * @note It is up to the window manager to determine what happens with any screen area + * uncovered by resizing the window. When there is no window manager, nothing + * is done with the uncovered area. + * + * @api + */ + void gwinResize(GHandle gh, coord_t width, coord_t height); + + /** + * @brief Redraw a window + * + * @param[in] gh The window + * + * @note This is normally never required as windows and widgets will redraw as required. + * Note that some windows are incapable of redrawing themselves as they don't save + * their drawing state. + * + * @api + */ + void gwinRedraw(GHandle gh); + + #if GWIN_NEED_WINDOWMANAGER || defined (__DOXYGEN__) + /** + * @brief Redraw a window + * + * @param[in] g The display to redraw. Passing NULL will redraw all displays. + * @param[in] preserve Should the redraw try to preserve existing screen data for those + * windows that can't redraw themselves? + * + * @note This is normally never required as windows and widgets will redraw as required. + * @note Some windows are incapable of redrawing themselves as they don't save + * their drawing state. + * @note This does not clear the background - just redraws the gwin windows (where possible) + * + * @api + */ + void gwinRedrawDisplay(GDisplay *g, bool_t preserve); + + /** + * @brief Minimize, Maximize or Restore a window + * @pre GWIN_NEED_WINDOWMANAGER must be TRUE + * + * @param[in] gh The window + * @param[in] minmax The new minimized/maximized state + * + * @note The final window state may not be the requested state. Window Managers + * do not need to implement changing the minmax state. If there is no + * window manager this call is ignored. + * @note The window is redrawn if it is changed. See the comments in @p gwinSetVisible() + * with regard to what can be redrawn and what can't. + * @note It is up to the window manager to determine what happens with any screen area + * uncovered by resizing the window. + * @note When a window is minimised it may be asked to draw the window or the window + * manager may draw the minimised window. + * + * @api + */ + void gwinSetMinMax(GHandle gh, GWindowMinMax minmax); + + /** + * @brief Get the Minimized/Maximized state of a window + * @pre GWIN_NEED_WINDOWMANAGER must be TRUE + * + * @param[in] gh The window + * + * @return GWIN_NORMAL, GWIN_MAXIMIZE or GWIN_MINIMIZE + * + * @api + */ + GWindowMinMax gwinGetMinMax(GHandle gh); + + /** + * @brief Raise a window to the top of the z-order + * @pre GWIN_NEED_WINDOWMANAGER must be TRUE + * + * @param[in] gh The window + * + * @note The window z-order is only supported by some window managers. See the comments + * in @p gwinSetVisible() with regard to what can be redrawn and what can't. + * + * @api + */ + void gwinRaise(GHandle gh); + + /** + * @brief Get the next window in the z-order + * @return The next window or NULL if no more windows + * + * @param[in] gh The previous window or NULL to get the first window + * + * @note This returns the next window in the system from top to bottom. + * @note Where there are parent child relationships, this ignores them + * and will list all windows in the system. There is no defined + * order between children of siblings and they can in fact be mixed + * in order. The only relationship honored is that parents will be + * listed before their children. + * + * @api + */ + GHandle gwinGetNextWindow(GHandle gh); + + #endif + + #if GDISP_NEED_TEXT || defined(__DOXYGEN__) + /** + * @brief Set the current font for this window. + * + * @param[in] gh The window handle + * @param[in] font The font to use for text functions + * + * @api + */ + void gwinSetFont(GHandle gh, font_t font); + #endif + +/*------------------------------------------------- + * Drawing functions + *-------------------------------------------------*/ + + /** + * @brief Clear the window + * @note Uses the current background color to clear the window + * + * @param[in] gh The window handle + * + * @api + */ + void gwinClear(GHandle gh); + + /** + * @brief Set a pixel in the window + * @note Uses the current foreground color to set the pixel + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The coordinates of the pixel + * + * @api + */ + void gwinDrawPixel(GHandle gh, coord_t x, coord_t y); + + /** + * @brief Draw a line in the window + * @note Uses the current foreground color to draw the line + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x0,y0 The start position + * @param[in] x1,y1 The end position + * + * @api + */ + void gwinDrawLine(GHandle gh, coord_t x0, coord_t y0, coord_t x1, coord_t y1); + + /** + * @brief Draw a box in the window + * @note Uses the current foreground color to draw the box + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The start position + * @param[in] cx,cy The size of the box (outside dimensions) + * + * @api + */ + void gwinDrawBox(GHandle gh, coord_t x, coord_t y, coord_t cx, coord_t cy); + + /** + * @brief Fill an rectangular area in the window + * @note Uses the current foreground color to fill the box + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The start position + * @param[in] cx,cy The size of the box (outside dimensions) + * + * @api + */ + void gwinFillArea(GHandle gh, coord_t x, coord_t y, coord_t cx, coord_t cy); + + /** + * @brief Fill an area in the window using the supplied bitmap. + * @details The bitmap is in the pixel format specified by the low level driver + * @note If GDISP_NEED_ASYNC is defined then the buffer must be static + * or at least retained until this call has finished the blit. You can + * tell when all graphics drawing is finished by @p gdispIsBusy() going FALSE. + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x, y The start filled area + * @param[in] cx, cy The width and height to be filled + * @param[in] srcx, srcy The bitmap position to start the fill from + * @param[in] srccx The width of a line in the bitmap. + * @param[in] buffer The pixels to use to fill the area. + * + * @api + */ + void gwinBlitArea(GHandle gh, coord_t x, coord_t y, coord_t cx, coord_t cy, coord_t srcx, coord_t srcy, coord_t srccx, const pixel_t *buffer); + +/*------------------------------------------------- + * Circle, ellipse, arc and arc-sectors functions + *-------------------------------------------------*/ + + #if GDISP_NEED_CIRCLE || defined(__DOXYGEN__) + /** + * @brief Draw a circle in the window. + * @note Uses the current foreground color to draw the circle + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x, y The center of the circle + * @param[in] radius The radius of the circle + * + * @api + */ + void gwinDrawCircle(GHandle gh, coord_t x, coord_t y, coord_t radius); + + /** + * @brief Draw a filled circle in the window. + * @note Uses the current foreground color to draw the filled circle + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x, y The center of the circle + * @param[in] radius The radius of the circle + * + * @api + */ + void gwinFillCircle(GHandle gh, coord_t x, coord_t y, coord_t radius); + #endif + + #if GDISP_NEED_ELLIPSE || defined(__DOXYGEN__) + /** + * @brief Draw an ellipse. + * @note Uses the current foreground color to draw the ellipse + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The center of the ellipse + * @param[in] a,b The dimensions of the ellipse + * + * @api + */ + void gwinDrawEllipse(GHandle gh, coord_t x, coord_t y, coord_t a, coord_t b); + + /** + * @brief Draw an filled ellipse. + * @note Uses the current foreground color to draw the filled ellipse + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The center of the ellipse + * @param[in] a,b The dimensions of the ellipse + * + * @api + */ + void gwinFillEllipse(GHandle gh, coord_t x, coord_t y, coord_t a, coord_t b); + #endif + + #if GDISP_NEED_ARC || defined(__DOXYGEN__) + /* + * @brief Draw an arc in the window. + * @note Uses the current foreground color to draw the arc + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The center point + * @param[in] radius The radius of the arc + * @param[in] start The start angle (0 to 360) + * @param[in] end The end angle (0 to 360) + * + * @api + */ + void gwinDrawArc(GHandle gh, coord_t x, coord_t y, coord_t radius, coord_t startangle, coord_t endangle); + + /* + * @brief Draw a filled arc in the window. + * @note Uses the current foreground color to draw the filled arc + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The center point + * @param[in] radius The radius of the arc + * @param[in] start The start angle (0 to 360) + * @param[in] end The end angle (0 to 360) + * + * @api + */ + void gwinFillArc(GHandle gh, coord_t x, coord_t y, coord_t radius, coord_t startangle, coord_t endangle); + #endif + + #if GDISP_NEED_ARCSECTORS || defined(__DOXYGEN__) + /* + * @brief Draw a selection of 45 degree arcs of a circle in the window. + * @note Uses the current foreground color to draw the arc sector + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The center of the circle + * @param[in] radius The radius of the circle + * @param[in] sectors Bits determine which sectors are drawn. + * Bits go anti-clockwise from the 0 degree mark (y = 0, x is positive), as follows: + * bit 0 - upper right right ----- + * bit 1 - upper upper right /2 1\ + * bit 2 - upper upper left /3 0\ + * bit 3 - upper left left \4 7/ + * bit 4 - lower left left \5 6/ + * bit 5 - lower lower left ----- + * bit 6 - lower lower right + * bit 7 - lower left left + * + * @api + */ + void gwinDrawArcSectors(GHandle gh, coord_t x, coord_t y, coord_t radius, uint8_t sectors); + + /* + * @brief Draw a filled selection of 45 degree arcs of a circle in the window. + * @note Uses the current foreground color to draw the arc sector + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The center of the circle + * @param[in] radius The radius of the circle + * @param[in] sectors Bits determine which sectors are drawn. + * Bits go anti-clockwise from the 0 degree mark (y = 0, x is positive), as follows: + * bit 0 - upper right right ----- + * bit 1 - upper upper right /2 1\ + * bit 2 - upper upper left /3 0\ + * bit 3 - upper left left \4 7/ + * bit 4 - lower left left \5 6/ + * bit 5 - lower lower left ----- + * bit 6 - lower lower right + * bit 7 - lower left left + * + * @api + */ + void gwinFillArcSectors(GHandle gh, coord_t x, coord_t y, coord_t radius, uint8_t sectors); + #endif + +/*------------------------------------------------- + * Pixel read-back functions + *-------------------------------------------------*/ + + #if GDISP_NEED_PIXELREAD || defined(__DOXYGEN__) + /** + * @brief Get the color of a pixel in the window. + * @return The color of the pixel. + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The position in the window + * + * @api + */ + color_t gwinGetPixelColor(GHandle gh, coord_t x, coord_t y); + #endif + +/*------------------------------------------------- + * Text functions + *-------------------------------------------------*/ + + #if GDISP_NEED_TEXT || defined(__DOXYGEN__) + /** + * @brief Draw a text character at the specified position in the window. + * @pre The font must have been set. + * @note Uses the current foreground color to draw the character + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The position for the text + * @param[in] c The character to draw + * + * @api + */ + void gwinDrawChar(GHandle gh, coord_t x, coord_t y, char c); + + /** + * @brief Draw a text character with a filled background at the specified position in the window. + * @pre The font must have been set. + * @note Uses the current foreground color to draw the character and fills the background using the background drawing color + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The position for the text + * @param[in] c The character to draw + * + * @api + */ + void gwinFillChar(GHandle gh, coord_t x, coord_t y, char c); + + /** + * @brief Draw a text string in the window + * @pre The font must have been set. + * @note Uses the current foreground color to draw the character + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The position for the text + * @param[in] str The string to draw + * + * @api + */ + void gwinDrawString(GHandle gh, coord_t x, coord_t y, const char *str); + + /** + * @brief Draw a text string with a filled background in the window + * @pre The font must have been set. + * @note Uses the current foreground color to draw the character and fills the background using the background drawing color + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The position for the text + * @param[in] str The string to draw + * + * @api + */ + void gwinFillString(GHandle gh, coord_t x, coord_t y, const char *str); + + /** + * @brief Draw a text string verticly centered within the specified box. + * @pre The font must have been set. + * @note Uses the current foreground color to draw the character. + * @note The specified box does not need to align with the window box + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The position for the text (need to define top-right or base-line - check code) + * @param[in] cx,cy The width and height of the box + * @param[in] str The string to draw + * @param[in] justify Justify the text left, center or right within the box + * + * @api + */ + void gwinDrawStringBox(GHandle gh, coord_t x, coord_t y, coord_t cx, coord_t cy, const char* str, justify_t justify); + + /** + * @brief Draw a text string verticly centered within the specified filled box. + * @pre The font must have been set. + * @note Uses the current foreground color to draw the character and fills the background using the background drawing color + * @note The entire box is filled. Note this box does not need to align with the window box + * @note May leave GDISP clipping to this window's dimensions + * + * @param[in] gh The window handle + * @param[in] x,y The position for the text (need to define top-right or base-line - check code) + * @param[in] cx,cy The width and height of the box + * @param[in] str The string to draw + * @param[in] justify Justify the text left, center or right within the box + * + * @api + */ + void gwinFillStringBox(GHandle gh, coord_t x, coord_t y, coord_t cx, coord_t cy, const char* str, justify_t justify); + #endif + +/*------------------------------------------------- + * Polygon functions + *-------------------------------------------------*/ + + #if GDISP_NEED_CONVEX_POLYGON || defined(__DOXYGEN__) + /** + * @brief Draw an enclosed polygon (convex, non-convex or complex). + * + * @note Uses the current foreground color. + * + * @param[in] gh The window handle + * @param[in] tx, ty Transform all points in pntarray by tx, ty + * @param[in] pntarray An array of points + * @param[in] cnt The number of points in the array + * + * @api + */ + void gwinDrawPoly(GHandle gh, coord_t tx, coord_t ty, const point *pntarray, unsigned cnt); + + /** + * @brief Fill a convex polygon + * @details Doesn't handle non-convex or complex polygons. + * + * @note Uses the current foreground color. + * + * @param[in] gh The window handle + * @param[in] tx, ty Transform all points in pntarray by tx, ty + * @param[in] pntarray An array of points + * @param[in] cnt The number of points in the array + * + * @note Convex polygons are those that have no internal angles. That is; + * you can draw a line from any point on the polygon to any other point + * on the polygon without it going outside the polygon. In our case we generalise + * this a little by saying that an infinite horizontal line (at any y value) will cross + * no more than two edges on the polygon. Some non-convex polygons do fit this criteria + * and can therefore be drawn. + * @note This routine is designed to be very efficient with even simple display hardware. + * + * @api + */ + void gwinFillConvexPoly(GHandle gh, coord_t tx, coord_t ty, const point *pntarray, unsigned cnt); + + /** + * @brief Draw a thick line in the window + * @details The line thickness is specified in pixels. The line ends can + * be selected to be either flat or round. + * @note Uses gdispGFillConvexPoly() internally to perform the drawing. + * @note Uses the current foreground color to draw the line + * + * @param[in] gh The window handle + * @param[in] x0,y0 The start position + * @param[in] x1,y1 The end position + * @param[in] width The width of the line + * @param[in] round Use round ends for the line + * + * @api + */ + void gwinDrawThickLine(GHandle gh, coord_t x0, coord_t y0, coord_t x1, coord_t y1, coord_t width, bool_t round); + #endif + +/*------------------------------------------------- + * Image functions + *-------------------------------------------------*/ + + #if GDISP_NEED_IMAGE || defined(__DOXYGEN__) + /** + * @brief Draw the image + * @return GDISP_IMAGE_ERR_OK (0) on success or an error code. + * + * @param[in] gh The window handle + * @param[in] img The image structure + * @param[in] x,y The window location to draw the image + * @param[in] cx,cy The area on the screen to draw + * @param[in] sx,sy The image position to start drawing at + * + * @pre gdispImageOpen() must have returned successfully. + * + * @note If sx,sy + cx,cy is outside the image boundaries the area outside the image + * is simply not drawn. + * @note If @p gdispImageCache() has been called first for this frame, this routine will draw using a + * fast blit from the cached frame. If not, it reads the input and decodes it as it + * is drawing. This may be significantly slower than if the image has been cached (but + * uses a lot less RAM) + * + * @api + */ + gdispImageError gwinDrawImage(GHandle gh, gdispImage *img, coord_t x, coord_t y, coord_t cx, coord_t cy, coord_t sx, coord_t sy); + #endif + +#ifdef __cplusplus +} +#endif + +/*------------------------------------------------- + * Additional functionality + *-------------------------------------------------*/ + + /* Include widgets */ + #if GWIN_NEED_WIDGET || defined(__DOXYGEN__) + #include "gwin_widget.h" + #endif + + /* Include containers */ + #if GWIN_NEED_CONTAINERS || defined(__DOXYGEN__) + #include "gwin_container.h" + #endif + + /* Include vanilla window objects */ + #if GWIN_NEED_CONSOLE || defined(__DOXYGEN__) + #include "gwin_console.h" + #endif + #if GWIN_NEED_GRAPH || defined(__DOXYGEN__) + #include "gwin_graph.h" + #endif + #if GWIN_NEED_IMAGE || defined(__DOXYGEN__) + #include "gwin_image.h" + #endif + #if GWIN_NEED_GL3D || defined(__DOXYGEN__) + #include "gwin_gl3d.h" + #endif + +#endif /* GFX_USE_GWIN */ + +#endif /* _GWIN_H */ +/** @} */ |