canvas.c File Reference

#include "colors.h"
#include "gui_main.h"
#include "mapview.h"
#include "canvas.h"

Go to the source code of this file.

Macros
#define	FONT(font)   (*fonts[font].styles)

Functions
struct canvas *	canvas_create (int width, int height)
void	canvas_free (struct canvas *store)
void	canvas_set_zoom (struct canvas *store, float zoom)
bool	has_zoom_support (void)
void	canvas_mapview_init (struct canvas *store)
void	canvas_copy (struct canvas *dest, struct canvas *src, int src_x, int src_y, int dest_x, int dest_y, int width, int height)
void	canvas_put_sprite (struct canvas *pcanvas, int canvas_x, int canvas_y, struct sprite *sprite, int offset_x, int offset_y, int width, int height)
void	canvas_put_sprite_full (struct canvas *pcanvas, int canvas_x, int canvas_y, struct sprite *sprite)
void	canvas_put_sprite_fogged (struct canvas *pcanvas, int canvas_x, int canvas_y, struct sprite *psprite, bool fog, int fog_x, int fog_y)
void	canvas_put_rectangle (struct canvas *pcanvas, struct color *pcolor, int canvas_x, int canvas_y, int width, int height)
void	canvas_fill_sprite_area (struct canvas *pcanvas, struct sprite *psprite, struct color *pcolor, int canvas_x, int canvas_y)
void	canvas_put_line (struct canvas *pcanvas, struct color *pcolor, enum line_type ltype, int start_x, int start_y, int dx, int dy)
void	canvas_put_curved_line (struct canvas *pcanvas, struct color *pcolor, enum line_type ltype, int start_x, int start_y, int dx, int dy)
void	get_text_size (int *width, int *height, enum client_font font, const char *text)
void	canvas_put_text (struct canvas *pcanvas, int canvas_x, int canvas_y, enum client_font font, struct color *pcolor, const char *text)
void	surface_put_text (cairo_t *cr, int x, int y, float zoom, enum client_font font, struct color *pcolor, const char *text)

Variables
static PangoLayout *	layout
struct {
PangoFontDescription **   styles
bool   shadowed
}	fonts [FONT_COUNT]

Macro Definition Documentation

FONT

#define FONT

(

font

)

(*fonts[font].styles)

Definition at line 340 of file canvas.c.

Function Documentation

canvas_copy()

void canvas_copy	(	struct canvas *	dest,
		struct canvas *	src,
		int	src_x,
		int	src_y,
		int	dest_x,
		int	dest_y,
		int	width,
		int	height
	)

Copies an area from the source canvas to the destination canvas.

Definition at line 76 of file canvas.c.

canvas_create()

struct canvas * canvas_create	(	int	width,
		int	height
	)

Create a canvas of the given size.

Definition at line 28 of file canvas.c.

canvas_fill_sprite_area()

void canvas_fill_sprite_area	(	struct canvas *	pcanvas,
		struct sprite *	psprite,
		struct color *	pcolor,
		int	canvas_x,
		int	canvas_y
	)

Fill the area covered by the sprite with the given color.

Definition at line 208 of file canvas.c.

canvas_free()

void canvas_free

(

struct canvas *

store

)

Free any resources associated with this canvas and the canvas struct itself.

Definition at line 44 of file canvas.c.

canvas_mapview_init()

void canvas_mapview_init

(

struct canvas *

store

)

Initialize canvas as mapview.

Definition at line 69 of file canvas.c.

canvas_put_curved_line()

void canvas_put_curved_line	(	struct canvas *	pcanvas,
		struct color *	pcolor,
		enum line_type	ltype,
		int	start_x,
		int	start_y,
		int	dx,
		int	dy
	)

Draw a colored curved line for the Technology Tree connectors A curved line is: 1 horizontal line, 2 arcs, 1 horizontal line

Definition at line 278 of file canvas.c.

canvas_put_line()

void canvas_put_line	(	struct canvas *	pcanvas,
		struct color *	pcolor,
		enum line_type	ltype,
		int	start_x,
		int	start_y,
		int	dx,
		int	dy
	)

Draw a colored line onto the mapview or citydialog canvas. XXX: unlike other canvas_put functions, supplied x/y are not prior to any canvas zoom.

Definition at line 223 of file canvas.c.

canvas_put_rectangle()

void canvas_put_rectangle	(	struct canvas *	pcanvas,
		struct color *	pcolor,
		int	canvas_x,
		int	canvas_y,
		int	width,
		int	height
	)

Draw a filled-in colored rectangle onto the mapview or citydialog canvas. Supplied coordinates are prior to any canvas zoom.

Definition at line 176 of file canvas.c.

canvas_put_sprite()

void canvas_put_sprite	(	struct canvas *	pcanvas,
		int	canvas_x,
		int	canvas_y,
		struct sprite *	sprite,
		int	offset_x,
		int	offset_y,
		int	width,
		int	height
	)

Draw some or all of a sprite onto the mapview or citydialog canvas. Supplied coordinates are prior to any canvas zoom.

Definition at line 109 of file canvas.c.

canvas_put_sprite_fogged()

void canvas_put_sprite_fogged	(	struct canvas *	pcanvas,
		int	canvas_x,
		int	canvas_y,
		struct sprite *	psprite,
		bool	fog,
		int	fog_x,
		int	fog_y
	)

Draw a full sprite onto the canvas. If "fog" is specified draw it with fog.

Definition at line 163 of file canvas.c.

canvas_put_sprite_full()

void canvas_put_sprite_full	(	struct canvas *	pcanvas,
		int	canvas_x,
		int	canvas_y,
		struct sprite *	sprite
	)

Draw a full sprite onto the mapview or citydialog canvas. Supplied canvas_x/y are prior to any canvas zoom.

Definition at line 148 of file canvas.c.

canvas_put_text()

void canvas_put_text	(	struct canvas *	pcanvas,
		int	canvas_x,
		int	canvas_y,
		enum client_font	font,
		struct color *	pcolor,
		const char *	text
	)

Draw the text onto the canvas in the given color and font. The canvas position does not account for the ascent of the text; this function must take care of this manually. The text will not be NULL but may be empty. Supplied canvas_x/y are prior to any canvas zoom.

Definition at line 374 of file canvas.c.

canvas_set_zoom()

void canvas_set_zoom	(	struct canvas *	store,
		float	zoom
	)

Set canvas zoom for future drawing operations.

Definition at line 53 of file canvas.c.

get_text_size()

void get_text_size	(	int *	width,
		int *	height,
		enum client_font	font,
		const char *	text
	)

Return the size of the given text in the given font. This size should include the ascent and descent of the text. Either of width or height may be NULL in which case those values simply shouldn't be filled out.

Definition at line 347 of file canvas.c.

has_zoom_support()

bool has_zoom_support

(

void

)

This gui has zoom support.

Definition at line 61 of file canvas.c.

surface_put_text()

void surface_put_text	(	cairo_t *	cr,
		int	x,
		int	y,
		float	zoom,
		enum client_font	font,
		struct color *	pcolor,
		const char *	text
	)

Draw the text onto the surface in the given color and font. The position does not account for the ascent of the text; this function must take care of this manually. The text may not be NULL but may be empty.

Definition at line 405 of file canvas.c.

Variable Documentation

[struct]

struct { ... } fonts[FONT_COUNT]

Initial value:

= {
  {&city_names_style, TRUE},
  {&city_productions_style, TRUE},
  {&reqtree_text_style, FALSE}
}

layout

PangoLayout* layout

static

Definition at line 331 of file canvas.c.

shadowed

bool shadowed

Definition at line 334 of file canvas.c.

styles

PangoFontDescription** styles

Definition at line 333 of file canvas.c.