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implement GimpPreview's transform() and untransform() methods. 

2007-01-13  Sven Neumann  <sven@gimp.org>

	* libgimp/gimpaspectpreview.c: implement GimpPreview's 
transform()
	and untransform() methods.


svn path=/trunk/; revision=21702
This commit is contained in:
Sven Neumann 2007-01-13 17:25:49 +00:00 committed by Sven Neumann
parent fa8e72ba1d
commit 50103f6ee3
2 changed files with 59 additions and 22 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2007-01-13 Sven Neumann <sven@gimp.org>
* libgimp/gimpaspectpreview.c: implement GimpPreview's transform()
and untransform() methods.
2007-01-13 Sven Neumann <sven@gimp.org>
* app/widgets/gimpfiledialog.c

74
libgimp/gimpaspectpreview.c
View File

@ -55,6 +55,16 @@ static void gimp_aspect_preview_draw (GimpPreview *preview);
static void gimp_aspect_preview_draw_buffer (GimpPreview *preview,
const guchar *buffer,
gint rowstride);
static void gimp_aspect_preview_transform (GimpPreview *preview,
gint src_x,
gint src_y,
gint *dest_x,
gint *dest_y);
static void gimp_aspect_preview_untransform (GimpPreview *preview,
gint src_x,
gint src_y,
gint *dest_x,
gint *dest_y);
static void gimp_aspect_preview_set_drawable (GimpAspectPreview *preview,
GimpDrawable *drawable);
@ -79,6 +89,8 @@ gimp_aspect_preview_class_init (GimpAspectPreviewClass *klass)
preview_class->draw = gimp_aspect_preview_draw;
preview_class->draw_buffer = gimp_aspect_preview_draw_buffer;
preview_class->transform = gimp_aspect_preview_transform;
preview_class->untransform = gimp_aspect_preview_untransform;
/**
* GimpAspectPreview:drawable:
@ -148,7 +160,6 @@ gimp_aspect_preview_style_set (GtkWidget *widget,
GimpPreview *preview = GIMP_PREVIEW (widget);
GimpDrawable *drawable = GIMP_ASPECT_PREVIEW (preview)->drawable;
gint size;
gint width, height;
if (GTK_WIDGET_CLASS (parent_class)->style_set)
GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style);
@ -156,18 +167,16 @@ gimp_aspect_preview_style_set (GtkWidget *widget,
gtk_widget_style_get (widget,
"size", &size,
NULL);
width = gimp_drawable_width (drawable->drawable_id);
height = gimp_drawable_height (drawable->drawable_id);
if (width > height)
if (drawable->width > drawable->height)
{
preview->width = MIN (width, size);
preview->height = (height * preview->width) / width;
preview->width = MIN (drawable->width, size);
preview->height = (drawable->height * preview->width) / drawable->width;
}
else
{
preview->height = MIN (height, size);
preview->width = (width * preview->height) / height;
preview->height = MIN (drawable->height, size);
preview->width = (drawable->width * preview->height) / drawable->height;
}
gtk_widget_set_size_request (preview->area,
@ -236,34 +245,57 @@ gimp_aspect_preview_draw_buffer (GimpPreview *preview,
}
}
static void
gimp_aspect_preview_transform (GimpPreview *preview,
gint src_x,
gint src_y,
gint *dest_x,
gint *dest_y)
{
GimpDrawable *drawable = GIMP_ASPECT_PREVIEW (preview)->drawable;
*dest_x = (gdouble) src_x * preview->width / drawable->width;
*dest_y = (gdouble) src_y * preview->height / drawable->height;
}
static void
gimp_aspect_preview_untransform (GimpPreview *preview,
gint src_x,
gint src_y,
gint *dest_x,
gint *dest_y)
{
GimpDrawable *drawable = GIMP_ASPECT_PREVIEW (preview)->drawable;
*dest_x = (gdouble) src_x * drawable->width / preview->width;
*dest_y = (gdouble) src_y * drawable->height / preview->height;
}
static void
gimp_aspect_preview_set_drawable (GimpAspectPreview *preview,
GimpDrawable *drawable)
{
gint width, height;
gint max_width, max_height;
gint width;
gint height;
preview->drawable = drawable;
width = gimp_drawable_width (drawable->drawable_id);
height = gimp_drawable_height (drawable->drawable_id);
if (width > height)
if (drawable->width > drawable->height)
{
max_width = MIN (width, 512);
max_height = (height * max_width) / width;
width = MIN (drawable->width, 512);
height = (drawable->height * width) / drawable->width;
}
else
{
max_height = MIN (height, 512);
max_width = (width * max_height) / height;
height = MIN (drawable->height, 512);
width = (drawable->width * height) / drawable->height;
}
gimp_preview_set_bounds (GIMP_PREVIEW (preview),
0, 0, max_width, max_height);
gimp_preview_set_bounds (GIMP_PREVIEW (preview), 0, 0, width, height);
if (height > 0)
g_object_set (GIMP_PREVIEW (preview)->frame,
"ratio", (gdouble) width / (gdouble) height,
"ratio",
(gdouble) drawable->width / (gdouble) drawable->height,
NULL);
}