bitmap.c File Reference

win32 implementation of the bitmap operations. More...

#include "utils/config.h"
#include <inttypes.h>
#include <sys/types.h>
#include <string.h>
#include <windows.h>
#include "utils/log.h"
#include "netsurf/bitmap.h"
#include "netsurf/plotters.h"
#include "netsurf/content.h"
#include "windows/plot.h"
#include "windows/bitmap.h"

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Functions
static void *	win32_bitmap_create (int width, int height, enum gui_bitmap_flags flags)
	Create a bitmap. More...
static unsigned char *	bitmap_get_buffer (void *bitmap)
	Return a pointer to the pixel data in a bitmap. More...
static size_t	bitmap_get_rowstride (void *bitmap)
	Find the width of a pixel row in bytes. More...
void	win32_bitmap_destroy (void *bitmap)
	Free a bitmap. More...
static void	bitmap_modified (void *bitmap)
	The bitmap image has changed, so flush any persistant cache. More...
static void	bitmap_set_opaque (void *bitmap, bool opaque)
	Sets whether a bitmap should be plotted opaque. More...
static bool	bitmap_get_opaque (void *bitmap)
	Gets whether a bitmap should be plotted opaque. More...
static int	bitmap_get_width (void *bitmap)
static int	bitmap_get_height (void *bitmap)
struct bitmap *	bitmap_scale (struct bitmap *prescale, int width, int height)
static nserror	bitmap_render (struct bitmap *bitmap, struct hlcache_handle *content)

Variables
static struct gui_bitmap_table	bitmap_table
struct gui_bitmap_table *	win32_bitmap_table = &bitmap_table

Detailed Description

win32 implementation of the bitmap operations.

Definition in file bitmap.c.

Function Documentation

bitmap_get_buffer()

static unsigned char * bitmap_get_buffer ( void *  bitmap )

static

Return a pointer to the pixel data in a bitmap.

The pixel data is packed as BITMAP_FORMAT, possibly with padding at the end of rows. The width of a row in bytes is given by bitmap_get_rowstride().

Parameters

bitmap

a bitmap, as returned by bitmap_create()

Returns

pointer to the pixel buffer

Definition at line 115 of file bitmap.c.

References bitmap(), NSLOG, and bitmap::pixdata.

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bitmap_get_height()

static int bitmap_get_height ( void *  bitmap )

static

Definition at line 224 of file bitmap.c.

References bitmap(), bitmap::height, and NSLOG.

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bitmap_get_opaque()

static bool bitmap_get_opaque ( void *  bitmap )

static

Gets whether a bitmap should be plotted opaque.

Parameters

bitmap

a bitmap, as returned by bitmap_create()

Definition at line 200 of file bitmap.c.

References bitmap(), NSLOG, and bitmap::opaque.

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bitmap_get_rowstride()

static size_t bitmap_get_rowstride ( void *  bitmap )

static

Find the width of a pixel row in bytes.

Parameters

bitmap

a bitmap, as returned by bitmap_create()

Returns

width of a pixel row in the bitmap

Definition at line 133 of file bitmap.c.

References bitmap(), NSLOG, and bitmap::width.

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bitmap_get_width()

static int bitmap_get_width ( void *  bitmap )

static

Definition at line 212 of file bitmap.c.

References bitmap(), NSLOG, and bitmap::width.

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bitmap_modified()

static void bitmap_modified ( void *  bitmap )

static

The bitmap image has changed, so flush any persistant cache.

Parameters

bitmap

a bitmap, as returned by bitmap_create()

Definition at line 171 of file bitmap.c.

bitmap_render()

static nserror bitmap_render ( struct bitmap *  bitmap, struct hlcache_handle *  content  )

static

Definition at line 269 of file bitmap.c.

References BITMAP_CLEAR, BITMAP_OPAQUE, content_get_width(), content_scaled_redraw(), bitmap::height, height, redraw_context::interactive, max, min, NSERROR_NOMEM, NSERROR_OK, NSLOG, bitmap::opaque, plot_hdc, bitmap::width, width, win32_bitmap_create(), win32_bitmap_destroy(), win_plotters, and bitmap::windib.

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bitmap_scale()

struct bitmap * bitmap_scale	(	struct bitmap *	prescale,
		int	width,
		int	height
	)

Definition at line 236 of file bitmap.c.

References bitmap::height, height, bitmap::pixdata, bitmap::width, and width.

Referenced by plot_alpha_bitmap().

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bitmap_set_opaque()

static void bitmap_set_opaque ( void *  bitmap, bool  opaque  )

static

Sets whether a bitmap should be plotted opaque.

Parameters

bitmap	a bitmap, as returned by bitmap_create()
opaque	whether the bitmap should be plotted opaque

Definition at line 180 of file bitmap.c.

References bitmap(), NSLOG, and bitmap::opaque.

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win32_bitmap_create()

static void * win32_bitmap_create ( int  width, int  height, enum gui_bitmap_flags  flags  )

static

Create a bitmap.

Parameters

width	width of image in pixels
height	height of image in pixels
state	flags flags for bitmap creation

Returns

an opaque struct bitmap, or NULL on memory exhaustion

Definition at line 48 of file bitmap.c.

References bitmap(), BITMAP_OPAQUE, bitmap::height, height, NSLOG, bitmap::opaque, bitmap::pbmi, bitmap::pixdata, bitmap::width, width, and bitmap::windib.

Referenced by bitmap_render().

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win32_bitmap_destroy()

void win32_bitmap_destroy

(

void *

bitmap

)

Free a bitmap.

Parameters

bitmap

a bitmap, as returned by bitmap_create()

Definition at line 151 of file bitmap.c.

References bitmap(), NSLOG, bitmap::pbmi, and bitmap::windib.

Referenced by bitmap_render().

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Variable Documentation

bitmap_table

struct gui_bitmap_table bitmap_table

static

Initial value:

= {
        .create = win32_bitmap_create,
        .destroy = win32_bitmap_destroy,
        .set_opaque = bitmap_set_opaque,
        .get_opaque = bitmap_get_opaque,
        .get_buffer = bitmap_get_buffer,
        .get_rowstride = bitmap_get_rowstride,
        .get_width = bitmap_get_width,
        .get_height = bitmap_get_height,
        .modified = bitmap_modified,
        .render = bitmap_render,
}

Definition at line 325 of file bitmap.c.

win32_bitmap_table

struct gui_bitmap_table* win32_bitmap_table = &bitmap_table

Definition at line 338 of file bitmap.c.

Referenced by WinMain().