graphics.h

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#ifndef NAVIT_GRAPHICS_H
#define NAVIT_GRAPHICS_H
#include "coord.h"
 
#ifdef __cplusplus
extern "C" {
#endif
struct attr;
struct point;
struct container;
struct color;
struct graphics;
struct graphics_gc;
struct graphics_font;
struct graphics_image;
struct transformation;
struct display_list;
struct mapset;
 
/* This enum must be synchronized with the constants in NavitGraphics.java. */
enum draw_mode_num {
    draw_mode_begin, draw_mode_end, draw_mode_begin_clear
};
 
struct graphics_priv;
struct graphics_font_priv;
struct graphics_image_priv;
struct graphics_gc_priv;
struct graphics_font_methods;
struct graphics_gc_methods;
struct graphics_image_methods;
 
enum graphics_image_type {
    graphics_image_type_unknown=0,
};
 
struct graphics_image_buffer {
    char magic[8]; /* buffer:\0 */
    enum graphics_image_type type;
    void *start;
    int len;
};
 
struct graphics_keyboard_priv;
 
struct graphics_keyboard {
    int w;                                                                              
    int h;                                                                              
    /* TODO mode is currently a copy of the respective value in the internal GUI and uses the same values.
     * This may need to be changed to something with globally available enum, possibly with revised values.
     * The Android implementation (the first to support a native on-screen keyboard) does not use this field
     * due to limitations of the platform. */
    int mode;                                                                   
    char *lang;                                                                 
    void *gui_priv;                                                             
    struct graphics_keyboard_priv *gra_priv;    
};
 
#define IMAGE_W_H_UNSET (-1)
 
struct padding {
    int left;
    int top;
    int right;
    int bottom;
};
 
struct graphics_methods {
    void (*graphics_destroy)(struct graphics_priv *gr);
    void (*draw_mode)(struct graphics_priv *gr, enum draw_mode_num mode);
    void (*draw_lines)(struct graphics_priv *gr, struct graphics_gc_priv *gc, struct point *p, int count);
    void (*draw_polygon)(struct graphics_priv *gr, struct graphics_gc_priv *gc, struct point *p, int count);
    void (*draw_rectangle)(struct graphics_priv *gr, struct graphics_gc_priv *gc, struct point *p, int w, int h);
    void (*draw_circle)(struct graphics_priv *gr, struct graphics_gc_priv *gc, struct point *p, int r);
    void (*draw_text)(struct graphics_priv *gr, struct graphics_gc_priv *fg, struct graphics_gc_priv *bg,
                      struct graphics_font_priv *font, char *text, struct point *p, int dx, int dy);
    void (*draw_image)(struct graphics_priv *gr, struct graphics_gc_priv *fg, struct point *p,
                       struct graphics_image_priv *img);
    void (*draw_image_warp)(struct graphics_priv *gr, struct graphics_gc_priv *fg, struct point *p, int count,
                            struct graphics_image_priv *img);
    void (*draw_drag)(struct graphics_priv *gr, struct point *p);
    struct graphics_font_priv *(*font_new)(struct graphics_priv *gr, struct graphics_font_methods *meth, char *font,
                                           int size, int flags);
    struct graphics_gc_priv *(*gc_new)(struct graphics_priv *gr, struct graphics_gc_methods *meth);
    void (*background_gc)(struct graphics_priv *gr, struct graphics_gc_priv *gc);
    struct graphics_priv *(*overlay_new)(struct graphics_priv *gr, struct graphics_methods *meth, struct point *p, int w,
                                         int h, int wraparound);
    struct graphics_image_priv *(*image_new)(struct graphics_priv *gr, struct graphics_image_methods *meth, char *path,
            int *w, int *h, struct point *hot, int rotation);
    void *(*get_data)(struct graphics_priv *gr, const char *type);
    void (*image_free)(struct graphics_priv *gr, struct graphics_image_priv *priv);
    void (*get_text_bbox)(struct graphics_priv *gr, struct graphics_font_priv *font, char *text, int dx, int dy,
                          struct point *ret, int estimate);
    void (*overlay_disable)(struct graphics_priv *gr, int disable);
    void (*overlay_resize)(struct graphics_priv *gr, struct point *p, int w, int h, int wraparound);
    int (*set_attr)(struct graphics_priv *gr, struct attr *attr);
    int (*show_native_keyboard)(struct graphics_keyboard *kbd);
    void (*hide_native_keyboard)(struct graphics_keyboard *kbd);
    navit_float (*get_dpi)(struct graphics_priv * gr);
    void (*draw_polygon_with_holes) (struct graphics_priv *gr, struct graphics_gc_priv *gc, struct point *p, int count,
                                     int hole_count, int* ccount, struct point **holes);
};
 
 
struct graphics_font_methods {
    void (*font_destroy)(struct graphics_font_priv *font);
};
 
struct graphics_font {
    struct graphics_font_priv *priv;
    struct graphics_font_methods meth;
};
 
struct graphics_gc_methods {
    void (*gc_destroy)(struct graphics_gc_priv *gc);
    void (*gc_set_linewidth)(struct graphics_gc_priv *gc, int width);
    void (*gc_set_dashes)(struct graphics_gc_priv *gc, int width, int offset, unsigned char dash_list[], int n);
    void (*gc_set_foreground)(struct graphics_gc_priv *gc, struct color *c);
    void (*gc_set_background)(struct graphics_gc_priv *gc, struct color *c);
    void (*gc_set_texture)(struct graphics_gc_priv *gc, struct graphics_image_priv *img);
};
 
struct graphics_gc {
    struct graphics_gc_priv *priv;
    struct graphics_gc_methods meth;
    struct graphics *gra;
};
 
struct graphics_image_methods {
    void (*image_destroy)(struct graphics_image_priv *img);
};
 
struct graphics_image {
    struct graphics_image_priv *priv;
    struct graphics_image_methods meth;
    int width;
    int height;
    struct point hot;
};
 
struct graphics_data_image {
    void *data;
    int size;
};
 
/* prototypes */
enum attr_type;
enum draw_mode_num;
enum item_type;
struct attr;
struct attr_iter;
struct callback;
struct color;
struct displayitem;
struct displaylist;
struct displaylist_handle;
struct graphics;
struct graphics_font;
struct graphics_gc;
struct graphics_image;
struct item;
struct itemgra;
struct layout;
struct mapset;
struct point;
struct point_rect;
struct transformation;
int graphics_set_attr(struct graphics *gra, struct attr *attr);
void graphics_set_rect(struct graphics *gra, struct point_rect *pr);
struct graphics *graphics_new(struct attr *parent, struct attr **attrs);
int graphics_get_attr(struct graphics *this_, enum attr_type type, struct attr *attr, struct attr_iter *iter);
struct graphics *graphics_overlay_new(struct graphics *parent, struct point *p, int w, int h, int wraparound);
void graphics_overlay_resize(struct graphics *this_, struct point *p, int w, int h, int wraparound);
void graphics_init(struct graphics *this_);
void *graphics_get_data(struct graphics *this_, const char *type);
void graphics_add_callback(struct graphics *this_, struct callback *cb);
void graphics_remove_callback(struct graphics *this_, struct callback *cb);
struct graphics_font *graphics_font_new(struct graphics *gra, int size, int flags);
struct graphics_font *graphics_named_font_new(struct graphics *gra, char *font, int size, int flags);
void graphics_font_destroy(struct graphics_font *gra_font);
void graphics_free(struct graphics *gra);
void graphics_font_destroy_all(struct graphics *gra);
struct graphics_gc *graphics_gc_new(struct graphics *gra);
void graphics_gc_destroy(struct graphics_gc *gc);
void graphics_gc_set_foreground(struct graphics_gc *gc, struct color *c);
void graphics_gc_set_background(struct graphics_gc *gc, struct color *c);
void graphics_gc_set_texture(struct graphics_gc *gc, struct graphics_image *img);
void graphics_gc_set_linewidth(struct graphics_gc *gc, int width);
void graphics_gc_set_dashes(struct graphics_gc *gc, int width, int offset, unsigned char dash_list[], int n);
gboolean graphics_gc_has_texture(struct graphics_gc *gc);
struct graphics_image *graphics_image_new_scaled(struct graphics *gra, char *path, int w, int h);
struct graphics_image *graphics_image_new_scaled_rotated(struct graphics *gra, char *path, int w, int h, int rotate);
struct graphics_image *graphics_image_new(struct graphics *gra, char *path);
void graphics_image_free(struct graphics *gra, struct graphics_image *img);
void graphics_draw_mode(struct graphics *this_, enum draw_mode_num mode);
void graphics_draw_lines(struct graphics *this_, struct graphics_gc *gc, struct point *p, int count);
void graphics_draw_circle(struct graphics *this_, struct graphics_gc *gc, struct point *p, int r);
void graphics_draw_rectangle(struct graphics *this_, struct graphics_gc *gc, struct point *p, int w, int h);
void graphics_draw_rectangle_rounded(struct graphics *this_, struct graphics_gc *gc, struct point *plu, int w, int h,
                                     int r, int fill);
void graphics_draw_text(struct graphics *this_, struct graphics_gc *gc1, struct graphics_gc *gc2,
                        struct graphics_font *font, char *text, struct point *p, int dx, int dy);
void graphics_get_text_bbox(struct graphics *this_, struct graphics_font *font, char *text, int dx, int dy,
                            struct point *ret, int estimate);
void graphics_overlay_disable(struct graphics *this_, int disable);
int  graphics_is_disabled(struct graphics *this_);
void graphics_draw_image(struct graphics *this_, struct graphics_gc *gc, struct point *p, struct graphics_image *img);
int graphics_draw_drag(struct graphics *this_, struct point *p);
void graphics_background_gc(struct graphics *this_, struct graphics_gc *gc);
void graphics_draw_text_std(struct graphics *this_, int text_size, char *text, struct point *p);
char *graphics_icon_path(const char *icon);
char *graphics_texture_path(const char *texture);
void graphics_draw_itemgra(struct graphics *gra, struct itemgra *itm, struct transformation *t, char *label);
void graphics_displaylist_draw(struct graphics *gra, struct displaylist *displaylist, struct transformation *trans,
                               struct layout *l, int flags);
void graphics_draw(struct graphics *gra, struct displaylist *displaylist, struct mapset *mapset,
                   struct transformation *trans, struct layout *l, int async, struct callback *cb, int flags);
int graphics_draw_cancel(struct graphics *gra, struct displaylist *displaylist);
struct displaylist_handle *graphics_displaylist_open(struct displaylist *displaylist);
struct displayitem *graphics_displaylist_next(struct displaylist_handle *dlh);
void graphics_displaylist_close(struct displaylist_handle *dlh);
struct displaylist *graphics_displaylist_new(void);
void graphics_displaylist_destroy(struct displaylist *displaylist);
struct map_selection *displaylist_get_selection(struct displaylist *displaylist);
GList *displaylist_get_clicked_list(struct displaylist *displaylist, struct point *p, int radius);
struct item *graphics_displayitem_get_item(struct displayitem *di);
int graphics_displayitem_get_coord_count(struct displayitem *di);
char *graphics_displayitem_get_label(struct displayitem *di);
int graphics_displayitem_get_displayed(struct displayitem *di);
int graphics_displayitem_get_z_order(struct displayitem *di);
int graphics_displayitem_within_dist(struct displaylist *displaylist, struct displayitem *di, struct point *p,
                                     int dist);
void graphics_add_selection(struct graphics *gra, struct item *item, enum item_type type, struct displaylist *dl);
void graphics_remove_selection(struct graphics *gra, struct item *item, enum item_type type, struct displaylist *dl);
void graphics_clear_selection(struct graphics *gra, struct displaylist *dl);
int graphics_show_native_keyboard (struct graphics *this_, struct graphics_keyboard *kbd);
int graphics_hide_native_keyboard (struct graphics *this_, struct graphics_keyboard *kbd);
void graphics_draw_polygon_clipped(struct graphics *gra, struct graphics_gc *gc, struct point *pin, int count_in);
void graphics_draw_polyline_clipped(struct graphics *gra, struct graphics_gc *gc, struct point *pa, int count,
                                    int *width, int poly);
navit_float graphics_get_dpi(struct graphics *gra);
 
/* end of prototypes */
#ifdef __cplusplus
}
#endif
 
#endif