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New function to replace any occurance of 

2008-07-11  Martin Nordholts  <martinn@svn.gnome.org>

	* app/display/gimpdisplayshell-scroll.c
	(gimp_display_shell_get_scaled_image_viewport_offset): New
	function to replace any occurance of

	  shell->disp_[xy]offset - shell->offset_[xy]

	that is just an implementation specific way of saying the same
	thing.

	* app/display/gimpdisplayshell-draw.c
	* app/display/gimpdisplayshell-transform.c: Make the code less
	implementation dependant by using the new function.

svn path=/trunk/; revision=26137
This commit is contained in:
Martin Nordholts 2008-07-11 19:31:45 +00:00 committed by Martin Nordholts
parent 78ef0cd13f
commit 18c89550fa
5 changed files with 109 additions and 32 deletions
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15
ChangeLog
View File

@ -1,3 +1,18 @@
2008-07-11 Martin Nordholts <martinn@svn.gnome.org>
* app/display/gimpdisplayshell-scroll.c
(gimp_display_shell_get_scaled_image_viewport_offset): New
function to replace any occurance of
shell->disp_[xy]offset - shell->offset_[xy]
that is just an implementation specific way of saying the same
thing.
* app/display/gimpdisplayshell-draw.c
* app/display/gimpdisplayshell-transform.c: Make the code less
implementation dependant by using the new function.
2008-07-11 Martin Nordholts <martinn@svn.gnome.org>
* app/display/gimpdisplayshell-draw.c

3
app/display/gimpdisplayshell-draw.c
View File

@ -534,8 +534,7 @@ gimp_display_shell_draw_area (GimpDisplayShell *shell,
level_height = tile_manager_height (tiles);
/* the size and position of the image viewport coordinates */
sx = shell->disp_xoffset - shell->offset_x;
sy = shell->disp_yoffset - shell->offset_y;
gimp_display_shell_get_scaled_image_viewport_offset (shell, &sx, &sy);
sw = PROJ_ROUND (level_width * (shell->scale_x * (1 << level)));
sh = PROJ_ROUND (level_height * (shell->scale_y * (1 << level)));

18
app/display/gimpdisplayshell-scroll.c
View File

@ -184,3 +184,21 @@ gimp_display_shell_get_viewport (GimpDisplayShell *shell,
if (w) *w = shell->disp_width / shell->scale_x;
if (h) *h = shell->disp_height / shell->scale_y;
}
/**
* gimp_display_shell_get_scaled_image_viewport_offset:
* @shell:
* @x:
* @y:
*
* Gets the scaled image offset in viewport coordinates
*
**/
void
gimp_display_shell_get_scaled_image_viewport_offset (GimpDisplayShell *shell,
gint *x,
gint *y)
{
if (x) *x = shell->disp_xoffset - shell->offset_x;
if (y) *y = shell->disp_yoffset - shell->offset_y;
}

32
app/display/gimpdisplayshell-scroll.h
View File

@ -20,23 +20,27 @@
#define __GIMP_DISPLAY_SHELL_SCROLL_H__
void gimp_display_shell_scroll (GimpDisplayShell *shell,
gdouble x_offset_into_image,
gdouble y_offset_into_image);
void gimp_display_shell_scroll (GimpDisplayShell *shell,
gdouble x_offset_into_image,
gdouble y_offset_into_image);
void gimp_display_shell_scroll_clamp_offsets (GimpDisplayShell *shell);
void gimp_display_shell_scroll_clamp_offsets (GimpDisplayShell *shell);
void gimp_display_shell_get_scaled_viewport (GimpDisplayShell *shell,
gint *x,
gint *y,
gint *w,
gint *h);
void gimp_display_shell_get_scaled_viewport (GimpDisplayShell *shell,
gint *x,
gint *y,
gint *w,
gint *h);
void gimp_display_shell_get_viewport (GimpDisplayShell *shell,
gdouble *x,
gdouble *y,
gdouble *w,
gdouble *h);
void gimp_display_shell_get_viewport (GimpDisplayShell *shell,
gdouble *x,
gdouble *y,
gdouble *w,
gdouble *h);
void gimp_display_shell_get_scaled_image_viewport_offset (GimpDisplayShell *shell,
gint *x,
gint *y);
#endif /* __GIMP_DISPLAY_SHELL_SCROLL_H__ */

73
app/display/gimpdisplayshell-transform.c
View File

@ -31,6 +31,7 @@
#include "gimpdisplay.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-scroll.h"
#include "gimpdisplayshell-transform.h"
@ -48,6 +49,9 @@ gimp_display_shell_transform_coordinate (GimpDisplayShell *shell,
GimpCoords *image_coords,
GimpCoords *display_coords)
{
gint scaled_image_viewport_offset_x;
gint scaled_image_viewport_offset_y;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (image_coords != NULL);
g_return_if_fail (display_coords != NULL);
@ -57,8 +61,12 @@ gimp_display_shell_transform_coordinate (GimpDisplayShell *shell,
display_coords->x = SCALEX (shell, image_coords->x);
display_coords->y = SCALEY (shell, image_coords->y);
display_coords->x += - shell->offset_x + shell->disp_xoffset;
display_coords->y += - shell->offset_y + shell->disp_yoffset;
gimp_display_shell_get_scaled_image_viewport_offset (shell,
&scaled_image_viewport_offset_x,
&scaled_image_viewport_offset_y);
display_coords->x += scaled_image_viewport_offset_x;
display_coords->y += scaled_image_viewport_offset_y;
}
/**
@ -75,14 +83,21 @@ gimp_display_shell_untransform_coordinate (GimpDisplayShell *shell,
GimpCoords *display_coords,
GimpCoords *image_coords)
{
gint scaled_image_viewport_offset_x;
gint scaled_image_viewport_offset_y;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (display_coords != NULL);
g_return_if_fail (image_coords != NULL);
*image_coords = *display_coords;
image_coords->x = display_coords->x - shell->disp_xoffset + shell->offset_x;
image_coords->y = display_coords->y - shell->disp_yoffset + shell->offset_y;
gimp_display_shell_get_scaled_image_viewport_offset (shell,
&scaled_image_viewport_offset_x,
&scaled_image_viewport_offset_y);
image_coords->x = display_coords->x - scaled_image_viewport_offset_x;
image_coords->y = display_coords->y - scaled_image_viewport_offset_y;
image_coords->x /= shell->scale_x;
image_coords->y /= shell->scale_y;
@ -96,6 +111,8 @@ gimp_display_shell_transform_xy (GimpDisplayShell *shell,
gint *ny,
gboolean use_offsets)
{
gint scaled_image_viewport_offset_x;
gint scaled_image_viewport_offset_y;
gint offset_x = 0;
gint offset_y = 0;
gint64 tx;
@ -119,8 +136,11 @@ gimp_display_shell_transform_xy (GimpDisplayShell *shell,
tx = ((gint64) x * shell->x_src_dec) / shell->x_dest_inc;
ty = ((gint64) y * shell->y_src_dec) / shell->y_dest_inc;
tx += shell->disp_xoffset - shell->offset_x;
ty += shell->disp_yoffset - shell->offset_y;
gimp_display_shell_get_scaled_image_viewport_offset (shell,
&scaled_image_viewport_offset_x,
&scaled_image_viewport_offset_y);
tx += scaled_image_viewport_offset_x;
ty += scaled_image_viewport_offset_y;
/* The projected coordinates might overflow a gint in the case of big
images at high zoom levels, so we clamp them here to avoid problems. */
@ -153,6 +173,8 @@ gimp_display_shell_untransform_xy (GimpDisplayShell *shell,
gboolean round,
gboolean use_offsets)
{
gint scaled_image_viewport_offset_x;
gint scaled_image_viewport_offset_y;
gint offset_x = 0;
gint offset_y = 0;
gint64 tx;
@ -170,8 +192,11 @@ gimp_display_shell_untransform_xy (GimpDisplayShell *shell,
gimp_item_offsets (item, &offset_x, &offset_y);
}
tx = (gint64) x + shell->offset_x - shell->disp_xoffset;
ty = (gint64) y + shell->offset_y - shell->disp_yoffset;
gimp_display_shell_get_scaled_image_viewport_offset (shell,
&scaled_image_viewport_offset_x,
&scaled_image_viewport_offset_y);
tx = (gint64) x - scaled_image_viewport_offset_x;
ty = (gint64) y - scaled_image_viewport_offset_y;
tx *= shell->x_dest_inc;
ty *= shell->y_dest_inc;
@ -308,17 +333,22 @@ gimp_display_shell_transform_points (GimpDisplayShell *shell,
for (i = 0; i < n_points ; i++)
{
gint scaled_image_viewport_offset_x;
gint scaled_image_viewport_offset_y;
gdouble x = points[i].x + offset_x;
gdouble y = points[i].y + offset_y;
x = x * shell->x_src_dec / shell->x_dest_inc;
y = y * shell->y_src_dec / shell->y_dest_inc;
gimp_display_shell_get_scaled_image_viewport_offset (shell,
&scaled_image_viewport_offset_x,
&scaled_image_viewport_offset_y);
coords[i].x = CLAMP (PROJ_ROUND64 (x) +
shell->disp_xoffset - shell->offset_x,
scaled_image_viewport_offset_x,
G_MININT, G_MAXINT);
coords[i].y = CLAMP (PROJ_ROUND64 (y) +
shell->disp_yoffset - shell->offset_y,
scaled_image_viewport_offset_y,
G_MININT, G_MAXINT);
}
}
@ -358,17 +388,22 @@ gimp_display_shell_transform_coords (GimpDisplayShell *shell,
for (i = 0; i < n_coords ; i++)
{
gint scaled_image_viewport_offset_x;
gint scaled_image_viewport_offset_y;
gdouble x = image_coords[i].x + offset_x;
gdouble y = image_coords[i].y + offset_y;
x = x * shell->x_src_dec / shell->x_dest_inc;
y = y * shell->y_src_dec / shell->y_dest_inc;
gimp_display_shell_get_scaled_image_viewport_offset (shell,
&scaled_image_viewport_offset_x,
&scaled_image_viewport_offset_y);
disp_coords[i].x = CLAMP (PROJ_ROUND64 (x) +
shell->disp_xoffset - shell->offset_x,
scaled_image_viewport_offset_x,
G_MININT, G_MAXINT);
disp_coords[i].y = CLAMP (PROJ_ROUND64 (y) +
shell->disp_yoffset - shell->offset_y,
scaled_image_viewport_offset_y,
G_MININT, G_MAXINT);
}
}
@ -408,6 +443,8 @@ gimp_display_shell_transform_segments (GimpDisplayShell *shell,
for (i = 0; i < n_segs ; i++)
{
gint scaled_image_viewport_offset_x;
gint scaled_image_viewport_offset_y;
gint64 x1, x2;
gint64 y1, y2;
@ -421,13 +458,17 @@ gimp_display_shell_transform_segments (GimpDisplayShell *shell,
y1 = (y1 * shell->y_src_dec) / shell->y_dest_inc;
y2 = (y2 * shell->y_src_dec) / shell->y_dest_inc;
dest_segs[i].x1 = CLAMP (x1 + shell->disp_xoffset - shell->offset_x,
gimp_display_shell_get_scaled_image_viewport_offset (shell,
&scaled_image_viewport_offset_x,
&scaled_image_viewport_offset_y);
dest_segs[i].x1 = CLAMP (x1 + scaled_image_viewport_offset_x,
G_MININT, G_MAXINT);
dest_segs[i].x2 = CLAMP (x2 + shell->disp_xoffset - shell->offset_x,
dest_segs[i].x2 = CLAMP (x2 + scaled_image_viewport_offset_x,
G_MININT, G_MAXINT);
dest_segs[i].y1 = CLAMP (y1 + shell->disp_yoffset - shell->offset_y,
dest_segs[i].y1 = CLAMP (y1 + scaled_image_viewport_offset_y,
G_MININT, G_MAXINT);
dest_segs[i].y2 = CLAMP (y2 + shell->disp_yoffset - shell->offset_y,
dest_segs[i].y2 = CLAMP (y2 + scaled_image_viewport_offset_y,
G_MININT, G_MAXINT);
}
}