// // "$Id$" // // Definition of classes Fl_Graphics_Driver, Fl_Surface_Device, Fl_Display_Device // for the Fast Light Tool Kit (FLTK). // // Copyright 2018 by Bill Spitzak and others. // // This library is free software. Distribution and use rights are outlined in // the file "COPYING" which should have been included with this file. If this // file is missing or damaged, see the license at: // // http://www.fltk.org/COPYING.php // // Please report all bugs and problems on the following page: // // http://www.fltk.org/str.php // /** \file Fl_Android_Graphics_Driver.H \brief Definition of Android graphics driver. */ #ifndef FL_ANDROID_GRAPHICS_DRIVER_H #define FL_ANDROID_GRAPHICS_DRIVER_H #include #include "Fl_Android_Graphics_Clipping.H" #include "Fl_Android_Graphics_Font.H" #include class Fl_Android_Window_Driver; class Fl_Android_Bytemap; class Fl_Android_565A_Map; /** \brief The Windows-specific graphics driver class. This class is implemented only on the Windows platform. */ class FL_EXPORT Fl_Android_Graphics_Driver : public Fl_Graphics_Driver { // easy access to the super class typedef Fl_Graphics_Driver super; protected: class Vertex; // see below // --- this is a copy of Fl_Graphics_Driver ---------------------------------- // - use this to find unimplementet calls in the derived driver // - excluded by #if/#endif means that we have not implemneted this yet // - methods marked with // super: use the implemnetation of the super class // - virtual ... override functions are implemented for Android private: virtual void draw_fixed(Fl_RGB_Image * rgb,int XP, int YP, int WP, int HP, int cx, int cy) override; virtual void draw_fixed(Fl_Pixmap * pxm,int XP, int YP, int WP, int HP, int cx, int cy) override; virtual void draw_fixed(Fl_Bitmap *bm, int XP, int YP, int WP, int HP, int cx, int cy) override; // some platforms may need to reimplement this // This is called from the surface device, see: end_current_() // super: virtual void set_current_(); protected: /** Sets the current value of the scaling factor */ // super: virtual void scale(float f) { scale_ = f; } // we do not support any scaling at this point protected: // set fl_gc, which we do not use in the Android port at this point // super: virtual void global_gc(); /** Support function for Fl_Pixmap drawing */ virtual void cache(Fl_Pixmap *img) override; /** Support function for Fl_Bitmap drawing */ virtual void cache(Fl_Bitmap *img) override; virtual void cache(Fl_RGB_Image *img) override; /** Support function for Fl_RGB_Image drawing */ virtual void uncache(Fl_RGB_Image *img, fl_uintptr_t &id_, fl_uintptr_t &mask_) override; // --- implementation is in src/drivers/xxx/Fl_xxx_Graphics_Driver_image.cxx /** see fl_draw_image(const uchar* buf, int X,int Y,int W,int H, int D, int L) */ virtual void draw_image(const uchar* buf, int X,int Y,int W,int H, int D=3, int L=0) override; /** see fl_draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D, int L) */ virtual void draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D=1, int L=0) override; /** see fl_draw_image(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D) */ virtual void draw_image(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=3) override; /** see fl_draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D) */ virtual void draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=1) override; #if 0 virtual void copy_offscreen(int x, int y, int w, int h, Fl_Offscreen pixmap, int srcx, int srcy); /** Support function for image drawing */ virtual Fl_Bitmask create_bitmask(int w, int h, const uchar *array) {return 0; } #endif // Support function for image drawing virtual void uncache_pixmap(fl_uintptr_t p) override; // Support function for image drawing virtual void delete_bitmask(Fl_Bitmask bm) override; public: /** Constructor, C++11 initialises member variables in-line */ Fl_Android_Graphics_Driver(); /** destructor */ virtual ~Fl_Android_Graphics_Driver() override; /** Return whether the graphics driver can do alpha blending */ virtual char can_do_alpha_blending() override { return 0; } // --- implementation is in src/fl_rect.cxx which includes src/drivers/xxx/Fl_xxx_Graphics_Driver_rect.cxx /** see fl_point() */ virtual void point(int x, int y) override; /** see fl_rect() */ virtual void rect(int x, int y, int w, int h) override; // super: virtual void focus_rect(int x, int y, int w, int h); /** see fl_rectf() */ virtual void rectf(int x, int y, int w, int h) override; /** see fl_line(int, int, int, int) */ virtual void line(int x, int y, int x1, int y1) override; /** see fl_line(int, int, int, int, int, int) */ virtual void line(int x, int y, int x1, int y1, int x2, int y2) override; /** see fl_xyline(int, int, int) */ virtual void xyline(int x, int y, int x1) override; /** see fl_xyline(int, int, int, int) */ virtual void xyline(int x, int y, int x1, int y2) override; /** see fl_xyline(int, int, int, int, int) */ virtual void xyline(int x, int y, int x1, int y2, int x3) override; /** see fl_yxline(int, int, int) */ virtual void yxline(int x, int y, int y1) override; /** see fl_yxline(int, int, int, int) */ virtual void yxline(int x, int y, int y1, int x2) override; /** see fl_yxline(int, int, int, int, int) */ virtual void yxline(int x, int y, int y1, int x2, int y3) override; /** see fl_loop(int, int, int, int, int, int) */ virtual void loop(int x0, int y0, int x1, int y1, int x2, int y2) override; /** see fl_loop(int, int, int, int, int, int, int, int) */ virtual void loop(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3) override; /** see fl_polygon(int, int, int, int, int, int) */ virtual void polygon(int x0, int y0, int x1, int y1, int x2, int y2) override; /** see fl_polygon(int, int, int, int, int, int, int, int) */ virtual void polygon(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3) override; // --- clipping /** see fl_push_clip() */ virtual void push_clip(int x, int y, int w, int h) override; /** see fl_clip_box() */ virtual int clip_box(int x, int y, int w, int h, int &X, int &Y, int &W, int &H) override; /** see fl_not_clipped() */ virtual int not_clipped(int x, int y, int w, int h) override; /** see fl_push_no_clip() */ virtual void push_no_clip() override; /** see fl_pop_clip() */ virtual void pop_clip() override; virtual Fl_Region clip_region() override; virtual void clip_region(Fl_Region r) override; virtual void restore_clip() override; // --- implementation is in src/fl_vertex.cxx which includes src/drivers/xxx/Fl_xxx_Graphics_Driver_vertex.cxx // super: virtual void push_matrix(); // super: virtual void pop_matrix(); // super: virtual void mult_matrix(double a, double b, double c, double d, double x, double y); // super: virtual void rotate(double d); // super: virtual void translate(double x,double y); virtual void begin_points() override; virtual void begin_line() override; virtual void begin_loop() override; virtual void begin_polygon() override; virtual void begin_complex_polygon() override; // super: virtual double transform_x(double x, double y); // super: virtual double transform_y(double x, double y); // super: virtual double transform_dx(double x, double y); // super: virtual double transform_dy(double x, double y); /** see fl_transformed_vertex() */ virtual void transformed_vertex(double xf, double yf) override; /** see fl_vertex() */ virtual void vertex(double x, double y) override; /** see fl_end_points() */ virtual void end_points() override; /** see fl_end_line() */ virtual void end_line() override; /** see fl_end_loop() */ virtual void end_loop() override; /** see fl_end_polygon() */ virtual void end_polygon() override; /** see fl_end_complex_polygon() */ virtual void end_complex_polygon() override; /** see fl_gap() */ virtual void gap() override; /** see fl_circle() */ virtual void circle(double x, double y, double r) override; // --- implementation is in src/fl_arc.cxx which includes src/drivers/xxx/Fl_xxx_Graphics_Driver_arc.cxx if needed virtual void arc(double x, double y, double r, double start, double end) override { super::arc(x, y, r, start, end); } // --- implementation is in src/fl_arci.cxx which includes src/drivers/xxx/Fl_xxx_Graphics_Driver_arci.cxx /** see fl_arc(int x, int y, int w, int h, double a1, double a2) */ virtual void arc(int x, int y, int w, int h, double a1, double a2) override; /** see fl_pie() */ virtual void pie(int x, int y, int w, int h, double a1, double a2) override; // --- implementation is in src/fl_curve.cxx which includes src/drivers/xxx/Fl_xxx_Graphics_Driver_curve.cxx if needed // super: virtual void curve(double X0, double Y0, double X1, double Y1, double X2, double Y2, double X3, double Y3); // --- implementation is in src/fl_line_style.cxx which includes src/cfg_gfx/xxx_line_style.cxx // TODO: line_style() /** see fl_line_style() */ virtual void line_style(int style, int width=0, char* dashes=0) override; // --- implementation is in src/fl_color.cxx which includes src/cfg_gfx/xxx_color.cxx /** see fl_color(Fl_Color) */ virtual void color(Fl_Color c) override { super::color(c); } virtual void set_color(Fl_Color i, unsigned int c) override; // super: virtual void free_color(Fl_Color i, int overlay); /** see fl_color(void) */ virtual Fl_Color color() override { return super::color(); } /** see fl_color(uchar, uchar, uchar) */ virtual void color(uchar r, uchar g, uchar b) override; /** see fl_draw(const char *str, int n, int x, int y) */ virtual void draw(const char *str, int n, int x, int y) override; /** Draw the first \p n bytes of the string \p str starting at position \p x , \p y */ // super: virtual void draw(const char *str, int n, float x, float y); /** see fl_draw(int angle, const char *str, int n, int x, int y) */ // TODO: drawing text at an angle is not supported virtual void draw(int angle, const char *str, int n, int x, int y) override { draw(str, n, x, y); } /** see fl_rtl_draw(const char *str, int n, int x, int y) */ // TODO: drawing text right-to-left is not supported virtual void rtl_draw(const char *str, int n, int x, int y) override { draw(str, n, x, y); } /** Returns non-zero if the graphics driver possesses the \p feature */ // super: virtual int has_feature(driver_feature feature) /** see fl_font(Fl_Font, Fl_Fontsize) */ virtual void font(Fl_Font face, Fl_Fontsize fsize) override; /** see fl_font(void) */ virtual Fl_Font font() override { return super::font(); } /** Return the current font size */ virtual Fl_Fontsize size() override; /** Compute the width of the first \p n bytes of the string \p str if drawn with current font */ virtual double width(const char *str, int n) override; /** Compute the width of Unicode character \p c if drawn with current font */ virtual double width(unsigned int c) override; virtual void text_extents(const char*, int n, int& dx, int& dy, int& w, int& h) override; /** Return the current line height */ virtual int height() override; /** Return the current line descent */ virtual int descent() override; /** Return the current Fl_Font_Descriptor */ // super: inline Fl_Font_Descriptor *font_descriptor() { return font_descriptor_;} /** Set the current Fl_Font_Descriptor */ // super: virtual void font_descriptor(Fl_Font_Descriptor *d) { font_descriptor_ = d;} #if 0 /** Sets the value of the driver-specific graphics context. */ virtual void gc(void*) {} /** Returns the driver-specific graphics context, of NULL if there's none. */ virtual void *gc(void) {return NULL;} /** Support for pixmap drawing */ virtual uchar **mask_bitmap() { return 0; } /** Support for pixmap drawing */ virtual void mask_bitmap(uchar **) {} #endif // default implementation may be enough /** Support for PostScript drawing */ virtual float scale_font_for_PostScript(Fl_Font_Descriptor *desc, int s) override { return float(s); } // default implementation may be enough /** Support for PostScript drawing - no documentation found on this call*/ // super: virtual float scale_bitmap_for_PostScript() { return 2; } // super: virtual void set_spot(int font, int size, int X, int Y, int W, int H, Fl_Window *win); // super: virtual void reset_spot(); // each platform implements these 3 functions its own way /* TODO: Android: we can implement this to have a redraw region based on Fl::damage * calls. Currently, we do not implement damage regions, but we can probably * implement this using our clipping regions. This may become neccesary when * we allow desktop-style window movement. */ // super: virtual void add_rectangle_to_region(Fl_Region r, int x, int y, int w, int h); // super: virtual Fl_Region XRectangleRegion(int x, int y, int w, int h); // super: virtual void XDestroyRegion(Fl_Region r); /** Support for Fl::get_font_name() */ virtual const char* get_font_name(Fl_Font fnum, int* ap) override; /** Support for Fl::get_font_sizes() */ virtual int get_font_sizes(Fl_Font fnum, int*& sizep) override; /** Support for Fl::set_fonts() */ virtual Fl_Font set_fonts(const char *name) override; /** Some platforms may need to implement this to support fonts */ // super: virtual Fl_Fontdesc* calc_fl_fonts(void) {return NULL;} /** Support for Fl::set_font() */ // super: virtual unsigned font_desc_size(); /** Support for Fl::get_font() */ virtual const char *font_name(int num) override; /** Support for Fl::set_font() */ virtual void font_name(int num, const char *name) override; /** Support function for fl_overlay_rect() and scaled GUI. Defaut implementation may be enough */ // super: virtual bool overlay_rect_unscaled(); /** Support function for fl_overlay_rect() and scaled GUI. Defaut implementation may be enough */ // super: virtual void overlay_rect(int x, int y, int w , int h) { loop(x, y, x+w-1, y, x+w-1, y+h-1, x, y+h-1); } // --- end of original Fl_Graphics_Driver header ----------------------------- // --- start of Android additions -------------------------------------------- // start drawing with this driver into the given window // The virtual call `set_current_()` changes surface, not windows void make_current(Fl_Window*); protected: static uint16_t make565(uchar r, uchar g, uchar b); static uint16_t make565(Fl_Color crgba); void rectf_unclipped(int x, int y, int w, int h); void xyline_unclipped(int x, int y, int x1); void yxline_unclipped(int x, int y, int y1); void end_polygon(int begin, int end); void ellipse(double xt, double yt, double rx, double ry); void draw(int xx, int yy, Fl_Android_565A_Map *bm, Fl_Rect_Region &r); void draw(int x, int y, Fl_Android_Bytemap *bm, Fl_Rect_Region &r); int render_letter(int xx, int yy, uint32_t c, Fl_Rect_Region &r); // pointer into the screen buffer at the top left corner of the current window uint16_t *pBits = nullptr; // advance to next line in screen buffer int32_t pStride = 0; // TODO: current line style, temp kludge to make focus rect work. int pLineStyle = 0; // Clipping region of the current window in window coordinates (see: pStride and pBits) Fl_Rect_Region pWindowRegion; // clipping region of the window minus overlapping other windows Fl_Complex_Region pDesktopWindowRegion; // Final clipping region for all graphics calls to this class. Fl_Complex_Region pClippingRegion; // store vertices for begin_.../end_... drawing class Vertex { public: void set(float x, float y, bool gap = false) { pX = x; pY = y; pIsGap = gap; } float pX, pY; bool pIsGap; }; void begin_vertices(); void add_vertex(float x, float y, bool gap=false); int pnVertex = 0, pNVertex = 0, pVertexGapStart = 0; Vertex *pVertex = nullptr; }; #if 0 /** The graphics driver used when printing on Android. */ class FL_EXPORT Fl_Android_Printer_Graphics_Driver : public Fl_Android_Graphics_Driver { #if 0 private: typedef BOOL (WINAPI* transparent_f_type) (HDC,int,int,int,int,HDC,int,int,int,int,UINT); transparent_f_type TransparentBlt(); public: virtual int has_feature(driver_feature mask) { return mask & (NATIVE | PRINTER); } void draw_unscaled(Fl_Pixmap *pxm, float s, int XP, int YP, int WP, int HP, int cx, int cy); void draw_unscaled(Fl_Bitmap *bm, float s, int XP, int YP, int WP, int HP, int cx, int cy); #endif }; #endif #endif // FL_ANDROID_GRAPHICS_DRIVER_H // // End of "$Id$". //