ev-render-context.c File Reference

#include <config.h>
#include "ev-render-context.h"

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Macros
#define	FLIP_DIMENSIONS(rc)   ((rc)->rotation == 90 || (rc)->rotation == 270)

Functions
static void	ev_render_context_init (EvRenderContext *rc)
static void	ev_render_context_class_init (EvRenderContextClass *class)
	G_DEFINE_TYPE (EvRenderContext, ev_render_context, G_TYPE_OBJECT)
static void	ev_render_context_dispose (GObject *object)
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, int 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 FLIP_DIMENSIONS

(

rc)

((rc)->rotation == 90 || (rc)->rotation == 270)

Definition at line 28 of file ev-render-context.c.

Function Documentation

static void ev_render_context_class_init ( EvRenderContextClass *  class)

static

Definition at line 48 of file ev-render-context.c.

{
    GObjectClass *oclass;

    oclass = G_OBJECT_CLASS (class);

    oclass->dispose = ev_render_context_dispose;
}

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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static void ev_render_context_dispose ( GObject *  object)

static

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

{
    EvRenderContext *rc;

    rc = (EvRenderContext *) object;

    if (rc->page) {
        g_object_unref (rc->page);
        rc->page = NULL;
    }

    (* G_OBJECT_CLASS (ev_render_context_parent_class)->dispose) (object);
}

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static void ev_render_context_init ( EvRenderContext *  rc)

static

Definition at line 30 of file ev-render-context.c.

{ /* Do Nothing */ }

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,
		int	rotation
	)

Definition at line 88 of file ev-render-context.c.

{
    g_return_if_fail (rc != NULL);

    rc->rotation = 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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G_DEFINE_TYPE	(	EvRenderContext	,
		ev_render_context	,
		G_TYPE_OBJECT
	)