libspectre/spectre-render-context.c File Reference

#include <stdlib.h>
#include "spectre-render-context.h"
#include "spectre-page.h"
#include "spectre-private.h"
#include "spectre-utils.h"

Functions
SpectreRenderContext *	spectre_render_context_new (void)
void	spectre_render_context_free (SpectreRenderContext *rc)
void	spectre_render_context_set_scale (SpectreRenderContext *rc, double x_scale, double y_scale)
void	spectre_render_context_get_scale (SpectreRenderContext *rc, double *x_scale, double *y_scale)
void	spectre_render_context_set_rotation (SpectreRenderContext *rc, unsigned int rotation)
unsigned int	spectre_render_context_get_rotation (SpectreRenderContext *rc)
void	spectre_render_context_set_resolution (SpectreRenderContext *rc, double x_dpi, double y_dpi)
void	spectre_render_context_get_resolution (SpectreRenderContext *rc, double *x_dpi, double *y_dpi)
void	spectre_render_context_set_page_size (SpectreRenderContext *rc, int width, int height)
void	spectre_render_context_get_page_size (SpectreRenderContext *rc, int *width, int *height)
void	spectre_render_context_set_use_platform_fonts (SpectreRenderContext *rc, int use_platform_fonts)
int	spectre_render_context_get_use_platform_fonts (SpectreRenderContext *rc)
void	spectre_render_context_set_antialias_bits (SpectreRenderContext *rc, int graphics_bits, int text_bits)
void	spectre_render_context_get_antialias_bits (SpectreRenderContext *rc, int *graphics_bits, int *text_bits)

---

Function Documentation

void spectre_render_context_free

(

SpectreRenderContext *

rc

)

Frees a rendering context

Parameters:

rc

The rendering context to free

void spectre_render_context_get_antialias_bits	(	SpectreRenderContext *	rc,
		int *	graphics_bits,
		int *	text_bits
	)

Gets the antialias options for graphics and texts

Parameters:

	rc	The rendering context to query
	graphics_bits	The number of antialias bits to use for graphics will be stored here
	text_bits	The number of antialias bits to use for text will be stored here

void spectre_render_context_get_page_size	(	SpectreRenderContext *	rc,
		int *	width,
		int *	height
	)

Gets the page size in pixels

Parameters:

	rc	The rendering context to query
	width	the width of the page will be stored here, or NULL
	height	the height of the page will be stored here, or NULL

void spectre_render_context_get_resolution	(	SpectreRenderContext *	rc,
		double *	x_dpi,
		double *	y_dpi
	)

Gets the resolution

Parameters:

	rc	The rendering context to query
	x_dpi	the horizontal resolution will be stored here, or NULL
	y_dpi	the vertical resolution will be stored here, or NULL

unsigned int spectre_render_context_get_rotation

(

SpectreRenderContext *

rc

)

Gets the rotation

Parameters:

rc

The rendering context to query

void spectre_render_context_get_scale	(	SpectreRenderContext *	rc,
		double *	x_scale,
		double *	y_scale
	)

Gets the scale

Parameters:

	rc	The rendering context to query
	x_scale	The scale factor for the X dimension will be stored here, or NULL
	y_scale	The scale factor for the Y dimension will be stored here, or NULL

int spectre_render_context_get_use_platform_fonts

(

SpectreRenderContext *

rc

)

Gets wheter to use the platform fonts when rendering or not

Parameters:

rc

The rendering context to query

SpectreRenderContext* spectre_render_context_new

(

void

)

Creates a rendering context

void spectre_render_context_set_antialias_bits	(	SpectreRenderContext *	rc,
		int	graphics_bits,
		int	text_bits
	)

Sets the antialias options for graphics and texts. The default is 4 for graphics and 2 for text

Parameters:

	rc	The rendering context to modify
	graphics_bits	The number of antialias bits to use for graphics. Typically 4 for antialias and 1 for no antialias
	text_bits	The number of antialias bits to use for text. Typically 2 for antialias and 1 for no antialias

void spectre_render_context_set_page_size	(	SpectreRenderContext *	rc,
		int	width,
		int	height
	)

Sets the page size in pixels. Rotation shouldn't be considered, the page size will be automatically adjusted when rendering according to the rotation selected. Note that the page size doesn't affect the scale. If no page size is given the page bounding box will be used, or the rectangle given when using spectre_page_render_slice

Parameters:

	rc	The rendering context to modify
	width	the width of the page
	height	the height of the page

void spectre_render_context_set_resolution	(	SpectreRenderContext *	rc,
		double	x_dpi,
		double	y_dpi
	)

Sets the resolution. The default is 72 for both directions

Parameters:

	rc	The rendering context to modify
	x_dpi	the horizontal resolution to set
	y_dpi	the vertical resolution to set

void spectre_render_context_set_rotation	(	SpectreRenderContext *	rc,
		unsigned int	rotation
	)

Sets the rotation. The default is 0

Parameters:

	rc	The rendering context to modify
	rotation	The rotation to use when rendering. Usually 0, 90, 180 or 270

void spectre_render_context_set_scale	(	SpectreRenderContext *	rc,
		double	x_scale,
		double	y_scale
	)

Sets the scale. The default is 1

Parameters:

	rc	The rendering context to modify
	x_scale	The scale factor for the X dimension to use when rendering. 2 is twice as big
	y_scale	The scale factor for the Y dimension to use when rendering. 2 is twice as big

void spectre_render_context_set_use_platform_fonts	(	SpectreRenderContext *	rc,
		int	use_platform_fonts
	)

Sets wheter to use the platform fonts when rendering or not. The default is TRUE

Parameters:

	rc	The rendering context to modify
	use_platform_fonts	should platform fonts be used when rendering?

---