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app: code cleanup and streamlining in GimpCanvasTransformPreview

This commit is contained in:
Michael Natterer 2011-03-27 16:54:21 +02:00
parent 92aeeadecf
commit 1d9f95ac98
2 changed files with 44 additions and 51 deletions
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93
app/display/gimpcanvastransformpreview.c
View File

@ -23,6 +23,7 @@
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools/tools-types.h" /* eek */
@ -40,13 +41,15 @@
#include "gimpdisplayshell-transform.h"
#define INT_MULT(a,b,t) ((t) = (a) * (b) + 0x80, ((((t) >> 8) + (t)) >> 8))
#define INT_MULT3(a,b,c,t) ((t) = (a) * (b) * (c) + 0x7F5B, \
((((t) >> 7) + (t)) >> 16))
#define INT_MULT(a,b,t) ((t) = (a) * (b) + 0x80, ((((t) >> 8) + (t)) >> 8))
#define INT_MULT3(a,b,c,t) ((t) = (a) * (b) * (c) + 0x7F5B, \
((((t) >> 7) + (t)) >> 16))
#define MIN4(a,b,c,d) MIN(MIN(a,b),MIN(c,d))
#define MAX4(a,b,c,d) MAX(MAX(a,b),MAX(c,d))
#define MAX_SUB_COLS 6 /* number of columns and */
#define MAX_SUB_ROWS 6 /* rows to use in perspective preview subdivision */
#define MAX_SUB_COLS 6 /* number of columns and */
#define MAX_SUB_ROWS 6 /* rows to use in perspective preview subdivision */
enum
@ -81,15 +84,13 @@ static void gimp_canvas_transform_preview_get_property (GObject
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_canvas_transform_preview_draw (GimpCanvasItem *item,
GimpDisplayShell *shell,
cairo_t *cr);
static cairo_region_t * gimp_canvas_transform_preview_get_extents (GimpCanvasItem *item,
GimpDisplayShell *shell);
/* local function prototypes */
static void gimp_canvas_transform_preview_draw_quad (GimpDrawable *texture,
cairo_t *cr,
GimpChannel *mask,
@ -200,6 +201,7 @@ gimp_canvas_transform_preview_set_property (GObject *object,
case PROP_TRANSFORM_TOOL:
private->transform_tool = g_value_get_object (value); /* don't ref */
break;
case PROP_OPACITY:
private->opacity = g_value_get_double (value);
break;
@ -223,6 +225,7 @@ gimp_canvas_transform_preview_get_property (GObject *object,
case PROP_TRANSFORM_TOOL:
g_value_set_object (value, private->transform_tool);
break;
case PROP_OPACITY:
g_value_set_double (value, private->opacity);
break;
@ -240,27 +243,25 @@ gimp_canvas_transform_preview_draw (GimpCanvasItem *item,
{
GimpCanvasTransformPreviewPrivate *private = GET_PRIVATE (item);
GimpTransformTool *tr_tool;
GimpDrawable *drawable;
GimpChannel *mask;
gdouble z1, z2, z3, z4;
GimpDrawable *drawable;
GimpChannel *mask;
gint mask_x1, mask_y1;
gint mask_x2, mask_y2;
gint mask_offx, mask_offy;
gint columns, rows;
gint j, k, sub;
gint mask_x1, mask_y1;
gint mask_x2, mask_y2;
gint mask_offx, mask_offy;
gint columns, rows;
gint j, k, sub;
/* x and y get filled with the screen coordinates of each corner of
* each quadrilateral subdivision of the transformed area. u and v
* are the corresponding points in the mask
*/
gfloat du, dv, dx, dy;
gint x[MAX_SUB_COLS * MAX_SUB_ROWS][4],
y[MAX_SUB_COLS * MAX_SUB_ROWS][4];
gfloat u[MAX_SUB_COLS * MAX_SUB_ROWS][4],
v[MAX_SUB_COLS * MAX_SUB_ROWS][4];
guchar opacity = 255;
gfloat du, dv, dx, dy;
gint x[MAX_SUB_COLS * MAX_SUB_ROWS][4];
gint y[MAX_SUB_COLS * MAX_SUB_ROWS][4];
gfloat u[MAX_SUB_COLS * MAX_SUB_ROWS][4];
gfloat v[MAX_SUB_COLS * MAX_SUB_ROWS][4];
guchar opacity;
tr_tool = private->transform_tool;
opacity = private->opacity * 255.999;
@ -411,37 +412,31 @@ gimp_canvas_transform_preview_get_extents (GimpCanvasItem *item,
{
GimpCanvasTransformPreviewPrivate *private = GET_PRIVATE (item);
GimpTransformTool *tr_tool;
gdouble dx[4], dy[4];
gdouble dx1, dy1;
gdouble dx2, dy2;
gdouble dx3, dy3;
gdouble dx4, dy4;
GdkRectangle rectangle;
gint i;
tr_tool = private->transform_tool;
gimp_display_shell_transform_xy_f (shell, tr_tool->tx1, tr_tool->ty1,
dx + 0, dy + 0);
gimp_display_shell_transform_xy_f (shell, tr_tool->tx2, tr_tool->ty2,
dx + 1, dy + 1);
gimp_display_shell_transform_xy_f (shell, tr_tool->tx3, tr_tool->ty3,
dx + 2, dy + 2);
gimp_display_shell_transform_xy_f (shell, tr_tool->tx4, tr_tool->ty4,
dx + 3, dy + 3);
gimp_display_shell_transform_xy_f (shell,
tr_tool->tx1, tr_tool->ty1,
&dx1, &dy1);
gimp_display_shell_transform_xy_f (shell,
tr_tool->tx2, tr_tool->ty2,
&dx2, &dy2);
gimp_display_shell_transform_xy_f (shell,
tr_tool->tx3, tr_tool->ty3,
&dx3, &dy3);
gimp_display_shell_transform_xy_f (shell,
tr_tool->tx4, tr_tool->ty4,
&dx4, &dy4);
/* find bounding box around preview */
rectangle.x = rectangle.width = (gint) dx[0];
rectangle.y = rectangle.height = (gint) dy[0];
for (i = 1; i < 4; i++)
{
if (dx[i] < rectangle.x)
rectangle.x = (gint) dx[i];
else if (dx[i] > rectangle.width)
rectangle.width = (gint) dx[i];
if (dy[i] < rectangle.y)
rectangle.y = (gint) dy[i];
else if (dy[i] > rectangle.height)
rectangle.height = (gint) dy[i];
}
rectangle.x = (gint) floor (MIN4 (dx1, dx2, dx3, dx4));
rectangle.y = (gint) floor (MIN4 (dy1, dy2, dy3, dy4));
rectangle.width = (gint) ceil (MAX4 (dx1, dx2, dx3, dx4));
rectangle.height = (gint) ceil (MAX4 (dy1, dy2, dy3, dy4));
rectangle.width -= rectangle.x;
rectangle.height -= rectangle.y;

2
app/display/gimpcanvastransformpreview.h
View File

@ -22,8 +22,6 @@
#define __GIMP_CANVAS_TRANSFORM_PREVIEW_H__
#include "tools/tools-types.h" /* eek */
#include "gimpcanvasitem.h"