ev-render-context.h File Reference

#include <glib-object.h>
#include "ev-page.h"

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Data Structures
struct	_EvRenderContextClass
struct	_EvRenderContext

Macros
#define	EV_TYPE_RENDER_CONTEXT   (ev_render_context_get_type())
#define	EV_RENDER_CONTEXT(object)   (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_RENDER_CONTEXT, EvRenderContext))
#define	EV_RENDER_CONTEXT_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_RENDER_CONTEXT, EvRenderContextClass))
#define	EV_IS_RENDER_CONTEXT(object)   (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_RENDER_CONTEXT))

Typedefs
typedef typedefG_BEGIN_DECLS struct _EvRenderContext	EvRenderContext
typedef struct _EvRenderContextClass	EvRenderContextClass

Functions
GType	ev_render_context_get_type (void) G_GNUC_CONST
EvRenderContext *	ev_render_context_new (EvPage *page, gint rotation, gdouble scale)
void	ev_render_context_set_page (EvRenderContext *rc, EvPage *page)
void	ev_render_context_set_rotation (EvRenderContext *rc, gint rotation)
void	ev_render_context_set_scale (EvRenderContext *rc, gdouble scale)
void	ev_render_context_set_target_size (EvRenderContext *rc, int target_width, int target_height)
void	ev_render_context_compute_scaled_size (EvRenderContext *rc, double width_points, double height_points, int *scaled_width, int *scaled_height)
void	ev_render_context_compute_transformed_size (EvRenderContext *rc, double width_points, double height_points, int *transformed_width, int *transformed_height)
void	ev_render_context_compute_scales (EvRenderContext *rc, double width_points, double height_points, double *scale_x, double *scale_y)

Macro Definition Documentation

#define EV_IS_RENDER_CONTEXT

(

object)

(G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_RENDER_CONTEXT))

Definition at line 39 of file ev-render-context.h.

#define EV_RENDER_CONTEXT

(

object)

(G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_RENDER_CONTEXT, EvRenderContext))

Definition at line 37 of file ev-render-context.h.

#define EV_RENDER_CONTEXT_CLASS

(

klass)

(G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_RENDER_CONTEXT, EvRenderContextClass))

Definition at line 38 of file ev-render-context.h.

#define EV_TYPE_RENDER_CONTEXT   (ev_render_context_get_type())

Definition at line 36 of file ev-render-context.h.

Typedef Documentation

typedef typedefG_BEGIN_DECLS struct _EvRenderContext EvRenderContext

Definition at line 33 of file ev-render-context.h.

typedef struct _EvRenderContextClass EvRenderContextClass

Definition at line 34 of file ev-render-context.h.

Function Documentation

void ev_render_context_compute_scaled_size	(	EvRenderContext *	rc,
		double	width_points,
		double	height_points,
		int *	scaled_width,
		int *	scaled_height
	)

Definition at line 117 of file ev-render-context.c.

{
    g_return_if_fail (rc != NULL);

    if (scaled_width) {
        if (rc->target_width >= 0) {
            *scaled_width = FLIP_DIMENSIONS (rc) ? rc->target_height : rc->target_width;
        } else {
            *scaled_width = (int) (width_points * rc->scale + 0.5);
        }
    }

    if (scaled_height) {
        if (rc->target_height >= 0) {
            *scaled_height = FLIP_DIMENSIONS (rc) ? rc->target_width : rc->target_height;
        } else {
            *scaled_height = (int) (height_points * rc->scale + 0.5);
        }
    }
}

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void ev_render_context_compute_scales	(	EvRenderContext *	rc,
		double	width_points,
		double	height_points,
		double *	scale_x,
		double *	scale_y
	)

Definition at line 164 of file ev-render-context.c.

{
    int scaled_width, scaled_height;

    g_return_if_fail (rc != NULL);

    ev_render_context_compute_scaled_size (rc, width_points, height_points,
                           &scaled_width, &scaled_height);

    if (scale_x)
        *scale_x = scaled_width / width_points;

    if (scale_y)
        *scale_y = scaled_height / height_points;
}

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void ev_render_context_compute_transformed_size	(	EvRenderContext *	rc,
		double	width_points,
		double	height_points,
		int *	transformed_width,
		int *	transformed_height
	)

Definition at line 143 of file ev-render-context.c.

{
    int scaled_width, scaled_height;

    g_return_if_fail (rc != NULL);

    ev_render_context_compute_scaled_size (rc, width_points, height_points,
                           &scaled_width, &scaled_height);

    if (transformed_width)
        *transformed_width = FLIP_DIMENSIONS (rc) ? scaled_height : scaled_width;

    if (transformed_height)
        *transformed_height = FLIP_DIMENSIONS (rc) ? scaled_width : scaled_height;
}

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GType ev_render_context_get_type

(

void

)

EvRenderContext* ev_render_context_new	(	EvPage *	page,
		gint	rotation,
		gdouble	scale
	)

Definition at line 58 of file ev-render-context.c.

{
    EvRenderContext *rc;

    rc = (EvRenderContext *) g_object_new (EV_TYPE_RENDER_CONTEXT, NULL);

    rc->page = page ? g_object_ref (page) : NULL;
    rc->rotation = rotation;
    rc->scale = scale;
    rc->target_width = -1;
    rc->target_height = -1;

    return rc;
}

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void ev_render_context_set_page	(	EvRenderContext *	rc,
		EvPage *	page
	)

Definition at line 76 of file ev-render-context.c.

{
    g_return_if_fail (rc != NULL);
    g_return_if_fail (EV_IS_PAGE (page));

    if (rc->page)
        g_object_unref (rc->page);
    rc->page = g_object_ref (page);
}

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void ev_render_context_set_rotation	(	EvRenderContext *	rc,
		gint	rotation
	)

void ev_render_context_set_scale	(	EvRenderContext *	rc,
		gdouble	scale
	)

Definition at line 97 of file ev-render-context.c.

{
    g_return_if_fail (rc != NULL);

    rc->scale = scale;
}

void ev_render_context_set_target_size	(	EvRenderContext *	rc,
		int	target_width,
		int	target_height
	)

Definition at line 106 of file ev-render-context.c.

{
    g_return_if_fail (rc != NULL);

    rc->target_width = target_width;
    rc->target_height = target_height;
}

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