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app: turn the transform preview into a GimpCanvasItem

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And remove all the complicated handling code entirely. This makes
GimpTransformTool a lot less complex. As a nice side effect, the
preview is now always 100% in sync with the grid and handles.
This commit is contained in:
Michael Natterer 2011-03-27 16:40:41 +02:00
parent 4d9952cf54
commit f09be52c1b
13 changed files with 471 additions and 500 deletions
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4
app/display/Makefile.am
View file

@ -61,6 +61,8 @@ libappdisplay_a_sources = \
gimpcanvassamplepoint.h \
gimpcanvastextcursor.c \
gimpcanvastextcursor.h \
gimpcanvastransformpreview.c \
gimpcanvastransformpreview.h \
gimpcursorview.c \
gimpcursorview.h \
gimpdisplay.c \
@ -103,8 +105,6 @@ libappdisplay_a_sources = \
gimpdisplayshell-icon.h \
gimpdisplayshell-items.c \
gimpdisplayshell-items.h \
gimpdisplayshell-preview.c \
gimpdisplayshell-preview.h \
gimpdisplayshell-progress.c \
gimpdisplayshell-progress.h \
gimpdisplayshell-render.c \

631
app/display/gimpdisplayshell-preview.c → app/display/gimpcanvastransformpreview.c
View file

@ -1,6 +1,9 @@
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcanvastransformpreview.c
* Copyright (C) 2011 Michael Natterer <mitch@gimp.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
@ -20,26 +23,20 @@
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "display-types.h"
#include "tools/tools-types.h"
#include "core/gimpchannel.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage.h"
#include "tools/tools-types.h" /* eek */
#include "base/tile-manager.h"
#include "tools/gimpperspectivetool.h"
#include "tools/gimptransformtool.h"
#include "tools/tool_manager.h"
#include "core/gimpchannel.h"
#include "core/gimpimage.h"
#include "gimpdisplay.h"
#include "tools/gimpperspectivetool.h"
#include "gimpcanvas.h"
#include "gimpcanvastransformpreview.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-appearance.h"
#include "gimpdisplayshell-preview.h"
#include "gimpdisplayshell-transform.h"
@ -51,101 +48,208 @@
#define MAX_SUB_COLS 6 /* number of columns and */
#define MAX_SUB_ROWS 6 /* rows to use in perspective preview subdivision */
enum
{
PROP_0,
PROP_TRANSFORM_TOOL,
PROP_OPACITY
};
typedef struct _GimpCanvasTransformPreviewPrivate GimpCanvasTransformPreviewPrivate;
struct _GimpCanvasTransformPreviewPrivate
{
GimpTransformTool *transform_tool;
gdouble opacity;
};
#define GET_PRIVATE(transform_preview) \
G_TYPE_INSTANCE_GET_PRIVATE (transform_preview, \
GIMP_TYPE_CANVAS_TRANSFORM_PREVIEW, \
GimpCanvasTransformPreviewPrivate)
/* local function prototypes */
static void gimp_display_shell_draw_quad (GimpDrawable *texture,
cairo_t *cr,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint *x,
gint *y,
gfloat *u,
gfloat *v,
guchar opacity);
static void gimp_display_shell_draw_tri (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint *x,
gint *y,
gfloat *u,
gfloat *v,
guchar opacity);
static void gimp_display_shell_draw_tri_row (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
gint x1,
gfloat u1,
gfloat v1,
gint x2,
gfloat u2,
gfloat v2,
gint y,
guchar opacity);
static void gimp_display_shell_draw_tri_row_mask (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint x1,
gfloat u1,
gfloat v1,
gint x2,
gfloat u2,
gfloat v2,
gint y,
guchar opacity);
static void gimp_display_shell_trace_tri_edge (gint *dest,
gint x1,
gint y1,
gint x2,
gint y2);
static void gimp_canvas_transform_preview_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_canvas_transform_preview_get_property (GObject *object,
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);
/* public functions */
/**
* gimp_display_shell_preview_transform:
* @shell: the #GimpDisplayShell
*
* If the active tool as reported by tool_manager_get_active() is a
* #GimpTransformTool and the tool has a valid drawable, and the tool
* has use_grid true (which, incidentally, is not the same thing as
* the preview type), and the area of the transformed preview is
* convex, then proceed with drawing the preview.
*
* The preview area is divided into 1 or more quadrilaterals, and
* drawn with gimp_display_shell_draw_quad(), which in turn breaks it
* down into 2 triangles, and draws row by row. If the tool is the
* Perspective tool, then more small quadrilaterals are used to
* compensate for the little rectangles not being the same size. In
* other words, all the transform tools are affine transformations
* except perspective, so approximate it with a few subdivisions.
**/
void
gimp_display_shell_preview_transform (GimpDisplayShell *shell,
cairo_t *cr)
/* local function prototypes */
static void gimp_canvas_transform_preview_draw_quad (GimpDrawable *texture,
cairo_t *cr,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint *x,
gint *y,
gfloat *u,
gfloat *v,
guchar opacity);
static void gimp_canvas_transform_preview_draw_tri (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint *x,
gint *y,
gfloat *u,
gfloat *v,
guchar opacity);
static void gimp_canvas_transform_preview_draw_tri_row (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
gint x1,
gfloat u1,
gfloat v1,
gint x2,
gfloat u2,
gfloat v2,
gint y,
guchar opacity);
static void gimp_canvas_transform_preview_draw_tri_row_mask (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint x1,
gfloat u1,
gfloat v1,
gint x2,
gfloat u2,
gfloat v2,
gint y,
guchar opacity);
static void gimp_canvas_transform_preview_trace_tri_edge (gint *dest,
gint x1,
gint y1,
gint x2,
gint y2);
G_DEFINE_TYPE (GimpCanvasTransformPreview, gimp_canvas_transform_preview,
GIMP_TYPE_CANVAS_ITEM)
#define parent_class gimp_canvas_transform_preview_parent_class
static void
gimp_canvas_transform_preview_class_init (GimpCanvasTransformPreviewClass *klass)
{
GimpTool *tool;
GimpTransformTool *tr_tool;
gdouble z1, z2, z3, z4;
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass);
GimpChannel *mask;
gint mask_x1, mask_y1;
gint mask_x2, mask_y2;
gint mask_offx, mask_offy;
object_class->set_property = gimp_canvas_transform_preview_set_property;
object_class->get_property = gimp_canvas_transform_preview_get_property;
gint columns, rows;
gint j, k, sub;
item_class->draw = gimp_canvas_transform_preview_draw;
item_class->get_extents = gimp_canvas_transform_preview_get_extents;
g_object_class_install_property (object_class, PROP_TRANSFORM_TOOL,
g_param_spec_object ("transform-tool",
NULL, NULL,
GIMP_TYPE_TRANSFORM_TOOL,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_OPACITY,
g_param_spec_double ("opacity",
NULL, NULL,
0.0, 1.0, 1.0,
GIMP_PARAM_READWRITE));
g_type_class_add_private (klass, sizeof (GimpCanvasTransformPreviewPrivate));
}
static void
gimp_canvas_transform_preview_init (GimpCanvasTransformPreview *transform_preview)
{
}
static void
gimp_canvas_transform_preview_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpCanvasTransformPreviewPrivate *private = GET_PRIVATE (object);
switch (property_id)
{
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;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_canvas_transform_preview_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpCanvasTransformPreviewPrivate *private = GET_PRIVATE (object);
switch (property_id)
{
case PROP_TRANSFORM_TOOL:
g_value_set_object (value, private->transform_tool);
break;
case PROP_OPACITY:
g_value_set_double (value, private->opacity);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_canvas_transform_preview_draw (GimpCanvasItem *item,
GimpDisplayShell *shell,
cairo_t *cr)
{
GimpCanvasTransformPreviewPrivate *private = GET_PRIVATE (item);
GimpTransformTool *tr_tool;
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;
/* x and y get filled with the screen coordinates of each corner of
* each quadrilateral subdivision of the transformed area. u and v
@ -158,22 +262,8 @@ gimp_display_shell_preview_transform (GimpDisplayShell *shell,
v[MAX_SUB_COLS * MAX_SUB_ROWS][4];
guchar opacity = 255;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (cr != NULL);
if (! gimp_display_shell_get_show_transform (shell) || ! shell->canvas)
return;
tool = tool_manager_get_active (shell->display->gimp);
if (! GIMP_IS_TRANSFORM_TOOL (tool) ||
! GIMP_IS_DRAWABLE (tool->drawable))
return;
tr_tool = GIMP_TRANSFORM_TOOL (tool);
if (! tr_tool->use_grid)
return;
tr_tool = private->transform_tool;
opacity = private->opacity * 255.999;
z1 = ((tr_tool->tx2 - tr_tool->tx1) * (tr_tool->ty4 - tr_tool->ty1) -
(tr_tool->tx4 - tr_tool->tx1) * (tr_tool->ty2 - tr_tool->ty1));
@ -189,28 +279,18 @@ gimp_display_shell_preview_transform (GimpDisplayShell *shell,
if (! ((z1 * z2 > 0) && (z3 * z4 > 0)))
return;
/* take opacity from the tool options */
{
gdouble value;
g_object_get (gimp_tool_get_options (tool),
"preview-opacity", &value,
NULL);
opacity = value * 255.999;
}
mask = NULL;
mask_offx = mask_offy = 0;
if (gimp_item_mask_bounds (GIMP_ITEM (tool->drawable),
drawable = GIMP_TOOL (tr_tool)->drawable;
if (gimp_item_mask_bounds (GIMP_ITEM (drawable),
&mask_x1, &mask_y1,
&mask_x2, &mask_y2))
{
mask = gimp_image_get_mask (gimp_display_get_image (shell->display));
mask = gimp_image_get_mask (gimp_item_get_image (GIMP_ITEM (drawable)));
gimp_item_get_offset (GIMP_ITEM (tool->drawable),
&mask_offx, &mask_offy);
gimp_item_get_offset (GIMP_ITEM (drawable), &mask_offx, &mask_offy);
}
if (GIMP_IS_PERSPECTIVE_TOOL (tr_tool))
@ -319,36 +399,95 @@ gimp_display_shell_preview_transform (GimpDisplayShell *shell,
k = columns * rows;
for (j = 0; j < k; j++)
gimp_display_shell_draw_quad (tool->drawable, cr,
mask, mask_offx, mask_offy,
x[j], y[j], u[j], v[j],
opacity);
gimp_canvas_transform_preview_draw_quad (drawable, cr,
mask, mask_offx, mask_offy,
x[j], y[j], u[j], v[j],
opacity);
}
static cairo_region_t *
gimp_canvas_transform_preview_get_extents (GimpCanvasItem *item,
GimpDisplayShell *shell)
{
GimpCanvasTransformPreviewPrivate *private = GET_PRIVATE (item);
GimpTransformTool *tr_tool;
gdouble dx[4], dy[4];
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);
/* 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.width -= rectangle.x;
rectangle.height -= rectangle.y;
return cairo_region_create_rectangle ((cairo_rectangle_int_t *) &rectangle);
}
GimpCanvasItem *
gimp_canvas_transform_preview_new (GimpDisplayShell *shell,
GimpTransformTool *transform_tool,
gdouble opacity)
{
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
g_return_val_if_fail (GIMP_IS_TRANSFORM_TOOL (transform_tool), NULL);
return g_object_new (GIMP_TYPE_CANVAS_TRANSFORM_PREVIEW,
"shell", shell,
"transform-tool", transform_tool,
"opacity", CLAMP (opacity, 0.0, 1.0),
NULL);
}
/* private functions */
/**
* gimp_display_shell_draw_quad:
* gimp_canvas_transform_preview_draw_quad:
* @texture: the #GimpDrawable to be previewed
* @cr: the #cairo_t to draw to
* @mask: a #GimpChannel
* @opacity: the opacity of the preview
*
* Take a quadrilateral, divide it into two triangles, and draw those
* with gimp_display_shell_draw_tri().
* with gimp_canvas_transform_preview_draw_tri().
**/
static void
gimp_display_shell_draw_quad (GimpDrawable *texture,
cairo_t *cr,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint *x,
gint *y,
gfloat *u,
gfloat *v,
guchar opacity)
gimp_canvas_transform_preview_draw_quad (GimpDrawable *texture,
cairo_t *cr,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint *x,
gint *y,
gfloat *u,
gfloat *v,
guchar opacity)
{
gint x2[3], y2[3];
gfloat u2[3], v2[3];
@ -393,19 +532,19 @@ gimp_display_shell_draw_quad (GimpDrawable *texture,
g_return_if_fail (area != NULL);
gimp_display_shell_draw_tri (texture, cr, area, minx, miny,
mask, mask_offx, mask_offy,
x, y, u, v, opacity);
gimp_display_shell_draw_tri (texture, cr, area, minx, miny,
mask, mask_offx, mask_offy,
x2, y2, u2, v2, opacity);
gimp_canvas_transform_preview_draw_tri (texture, cr, area, minx, miny,
mask, mask_offx, mask_offy,
x, y, u, v, opacity);
gimp_canvas_transform_preview_draw_tri (texture, cr, area, minx, miny,
mask, mask_offx, mask_offy,
x2, y2, u2, v2, opacity);
cairo_surface_destroy (area);
}
}
/**
* gimp_display_shell_draw_tri:
* gimp_canvas_transform_preview_draw_tri:
* @texture: the thing being transformed
* @cr: the #cairo_t to draw to
* @area: has prefetched pixel data of dest
@ -414,24 +553,25 @@ gimp_display_shell_draw_quad (GimpDrawable *texture,
* @x: Array of the three x coords of triangle
* @y: Array of the three y coords of triangle
*
* This draws a triangle onto dest by breaking it down into pixel rows, and
* then calling gimp_display_shell_draw_tri_row() and
* gimp_display_shell_draw_tri_row_mask() to do the actual pixel changing.
* This draws a triangle onto dest by breaking it down into pixel
* rows, and then calling gimp_canvas_transform_preview_draw_tri_row()
* and gimp_canvas_transform_preview_draw_tri_row_mask() to do the
* actual pixel changing.
**/
static void
gimp_display_shell_draw_tri (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint *x,
gint *y,
gfloat *u, /* texture coords */
gfloat *v, /* 0.0 ... tex width, height */
guchar opacity)
gimp_canvas_transform_preview_draw_tri (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint *x,
gint *y,
gfloat *u, /* texture coords */
gfloat *v, /* 0.0 ... tex width, height */
guchar opacity)
{
gdouble clip_x1, clip_y1, clip_x2, clip_y2;
gint j, k;
@ -475,7 +615,7 @@ gimp_display_shell_draw_tri (GimpDrawable *texture,
/* draw the triangle */
gimp_display_shell_trace_tri_edge (l_edge, x[0], y[0], x[2], y[2]);
gimp_canvas_transform_preview_trace_tri_edge (l_edge, x[0], y[0], x[2], y[2]);
left = l_edge;
dul = (u[2] - u[0]) / (y[2] - y[0]);
@ -485,7 +625,7 @@ gimp_display_shell_draw_tri (GimpDrawable *texture,
if (y[0] != y[1])
{
gimp_display_shell_trace_tri_edge (r_edge, x[0], y[0], x[1], y[1]);
gimp_canvas_transform_preview_trace_tri_edge (r_edge, x[0], y[0], x[1], y[1]);
right = r_edge;
dur = (u[1] - u[0]) / (y[1] - y[0]);
@ -497,13 +637,13 @@ gimp_display_shell_draw_tri (GimpDrawable *texture,
for (ry = y[0]; ry < y[1]; ry++)
{
if (ry >= clip_y1 && ry < clip_y2)
gimp_display_shell_draw_tri_row_mask (texture, cr,
area, area_offx, area_offy,
mask, mask_offx, mask_offy,
*left, u_l, v_l,
*right, u_r, v_r,
ry,
opacity);
gimp_canvas_transform_preview_draw_tri_row_mask (texture, cr,
area, area_offx, area_offy,
mask, mask_offx, mask_offy,
*left, u_l, v_l,
*right, u_r, v_r,
ry,
opacity);
left ++; right ++;
u_l += dul; v_l += dvl;
u_r += dur; v_r += dvr;
@ -512,12 +652,12 @@ gimp_display_shell_draw_tri (GimpDrawable *texture,
for (ry = y[0]; ry < y[1]; ry++)
{
if (ry >= clip_y1 && ry < clip_y2)
gimp_display_shell_draw_tri_row (texture, cr,
area, area_offx, area_offy,
*left, u_l, v_l,
*right, u_r, v_r,
ry,
opacity);
gimp_canvas_transform_preview_draw_tri_row (texture, cr,
area, area_offx, area_offy,
*left, u_l, v_l,
*right, u_r, v_r,
ry,
opacity);
left ++; right ++;
u_l += dul; v_l += dvl;
u_r += dur; v_r += dvr;
@ -526,7 +666,7 @@ gimp_display_shell_draw_tri (GimpDrawable *texture,
if (y[1] != y[2])
{
gimp_display_shell_trace_tri_edge (r_edge, x[1], y[1], x[2], y[2]);
gimp_canvas_transform_preview_trace_tri_edge (r_edge, x[1], y[1], x[2], y[2]);
right = r_edge;
dur = (u[2] - u[1]) / (y[2] - y[1]);
@ -538,13 +678,13 @@ gimp_display_shell_draw_tri (GimpDrawable *texture,
for (ry = y[1]; ry < y[2]; ry++)
{
if (ry >= clip_y1 && ry < clip_y2)
gimp_display_shell_draw_tri_row_mask (texture, cr,
area, area_offx, area_offy,
mask, mask_offx, mask_offy,
*left, u_l, v_l,
*right, u_r, v_r,
ry,
opacity);
gimp_canvas_transform_preview_draw_tri_row_mask (texture, cr,
area, area_offx, area_offy,
mask, mask_offx, mask_offy,
*left, u_l, v_l,
*right, u_r, v_r,
ry,
opacity);
left ++; right ++;
u_l += dul; v_l += dvl;
u_r += dur; v_r += dvr;
@ -553,12 +693,12 @@ gimp_display_shell_draw_tri (GimpDrawable *texture,
for (ry = y[1]; ry < y[2]; ry++)
{
if (ry >= clip_y1 && ry < clip_y2)
gimp_display_shell_draw_tri_row (texture, cr,
area, area_offx, area_offy,
*left, u_l, v_l,
*right, u_r, v_r,
ry,
opacity);
gimp_canvas_transform_preview_draw_tri_row (texture, cr,
area, area_offx, area_offy,
*left, u_l, v_l,
*right, u_r, v_r,
ry,
opacity);
left ++; right ++;
u_l += dul; v_l += dvl;
u_r += dur; v_r += dvr;
@ -570,29 +710,30 @@ gimp_display_shell_draw_tri (GimpDrawable *texture,
}
/**
* gimp_display_shell_draw_tri_row:
* gimp_canvas_transform_preview_draw_tri_row:
* @texture: the thing being transformed
* @cr: the #cairo_t to draw to
* @area: has prefetched pixel data of dest
*
* Called from gimp_display_shell_draw_tri(), this draws a single row of a
* triangle onto dest when there is not a mask. The run (x1,y) to (x2,y) in
* dest corresponds to the run (u1,v1) to (u2,v2) in texture.
* Called from gimp_canvas_transform_preview_draw_tri(), this draws a
* single row of a triangle onto dest when there is not a mask. The
* run (x1,y) to (x2,y) in dest corresponds to the run (u1,v1) to
* (u2,v2) in texture.
**/
static void
gimp_display_shell_draw_tri_row (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
gint x1,
gfloat u1,
gfloat v1,
gint x2,
gfloat u2,
gfloat v2,
gint y,
guchar opacity)
gimp_canvas_transform_preview_draw_tri_row (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
gint x1,
gfloat u1,
gfloat v1,
gint x2,
gfloat u2,
gfloat v2,
gint y,
guchar opacity)
{
TileManager *tiles; /* used to get the source texture colors */
guchar *pptr; /* points into the pixels of a row of area */
@ -801,28 +942,28 @@ gimp_display_shell_draw_tri_row (GimpDrawable *texture,
}
/**
* gimp_display_shell_draw_tri_row_mask:
* gimp_canvas_transform_preview_draw_tri_row_mask:
*
* Called from gimp_display_shell_draw_tri(), this draws a single row of a
* triangle onto dest, when there is a mask.
* Called from gimp_canvas_transform_preview_draw_tri(), this draws a
* single row of a triangle onto dest, when there is a mask.
**/
static void
gimp_display_shell_draw_tri_row_mask (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint x1,
gfloat u1,
gfloat v1,
gint x2,
gfloat u2,
gfloat v2,
gint y,
guchar opacity)
gimp_canvas_transform_preview_draw_tri_row_mask (GimpDrawable *texture,
cairo_t *cr,
cairo_surface_t *area,
gint area_offx,
gint area_offy,
GimpChannel *mask,
gint mask_offx,
gint mask_offy,
gint x1,
gfloat u1,
gfloat v1,
gint x2,
gfloat u2,
gfloat v2,
gint y,
guchar opacity)
{
TileManager *tiles, *masktiles; /* used to get the source texture colors */
@ -1071,19 +1212,19 @@ gimp_display_shell_draw_tri_row_mask (GimpDrawable *texture,
}
/**
* gimp_display_shell_trace_tri_edge:
* gimp_canvas_transform_preview_trace_tri_edge:
* @dest: x coordinates are placed in this array
*
* Find the x coordinates for a line that runs from (x1,y1) to (x2,y2),
* corresponding to the y coordinates y1 to y2-1. So
* dest must be large enough to hold y2-y1 values.
* Find the x coordinates for a line that runs from (x1,y1) to
* (x2,y2), corresponding to the y coordinates y1 to y2-1. So dest
* must be large enough to hold y2-y1 values.
**/
static void
gimp_display_shell_trace_tri_edge (gint *dest,
gint x1,
gint y1,
gint x2,
gint y2)
gimp_canvas_transform_preview_trace_tri_edge (gint *dest,
gint x1,
gint y1,
gint x2,
gint y2)
{
const gint dy = y2 - y1;
gint dx;

59
app/display/gimpcanvastransformpreview.h Normal file
View file

@ -0,0 +1,59 @@
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcanvastransformpreview.h
* Copyright (C) 2011 Michael Natterer <mitch@gimp.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __GIMP_CANVAS_TRANSFORM_PREVIEW_H__
#define __GIMP_CANVAS_TRANSFORM_PREVIEW_H__
#include "tools/tools-types.h" /* eek */
#include "gimpcanvasitem.h"
#define GIMP_TYPE_CANVAS_TRANSFORM_PREVIEW (gimp_canvas_transform_preview_get_type ())
#define GIMP_CANVAS_TRANSFORM_PREVIEW(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CANVAS_TRANSFORM_PREVIEW, GimpCanvasTransformPreview))
#define GIMP_CANVAS_TRANSFORM_PREVIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CANVAS_TRANSFORM_PREVIEW, GimpCanvasTransformPreviewClass))
#define GIMP_IS_CANVAS_TRANSFORM_PREVIEW(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CANVAS_TRANSFORM_PREVIEW))
#define GIMP_IS_CANVAS_TRANSFORM_PREVIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CANVAS_TRANSFORM_PREVIEW))
#define GIMP_CANVAS_TRANSFORM_PREVIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_CANVAS_TRANSFORM_PREVIEW, GimpCanvasTransformPreviewClass))
typedef struct _GimpCanvasTransformPreview GimpCanvasTransformPreview;
typedef struct _GimpCanvasTransformPreviewClass GimpCanvasTransformPreviewClass;
struct _GimpCanvasTransformPreview
{
GimpCanvasItem parent_instance;
};
struct _GimpCanvasTransformPreviewClass
{
GimpCanvasItemClass parent_class;
};
GType gimp_canvas_transform_preview_get_type (void) G_GNUC_CONST;
GimpCanvasItem * gimp_canvas_transform_preview_new (GimpDisplayShell *shell,
GimpTransformTool *transform_tool,
gdouble opacity);
#endif /* __GIMP_CANVAS_TRANSFORM_PREVIEW_H__ */

17
app/display/gimpdisplayshell-appearance.c
View file

@ -283,23 +283,6 @@ gimp_display_shell_get_show_layer (GimpDisplayShell *shell)
return appearance_get_options (shell)->show_layer_boundary;
}
void
gimp_display_shell_set_show_transform (GimpDisplayShell *shell,
gboolean show)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
shell->show_transform_preview = show;
}
gboolean
gimp_display_shell_get_show_transform (GimpDisplayShell *shell)
{
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), FALSE);
return shell->show_transform_preview;
}
void
gimp_display_shell_set_show_guides (GimpDisplayShell *shell,
gboolean show)

4
app/display/gimpdisplayshell-appearance.h
View file

@ -45,10 +45,6 @@ void gimp_display_shell_set_show_layer (GimpDisplayShell *sh
gboolean show);
gboolean gimp_display_shell_get_show_layer (GimpDisplayShell *shell);
void gimp_display_shell_set_show_transform (GimpDisplayShell *shell,
gboolean show);
gboolean gimp_display_shell_get_show_transform (GimpDisplayShell *shell);
void gimp_display_shell_set_show_grid (GimpDisplayShell *shell,
gboolean show);
gboolean gimp_display_shell_get_show_grid (GimpDisplayShell *shell);

6
app/display/gimpdisplayshell-callbacks.c
View file

@ -38,7 +38,6 @@
#include "gimpdisplayshell-appearance.h"
#include "gimpdisplayshell-callbacks.h"
#include "gimpdisplayshell-draw.h"
#include "gimpdisplayshell-preview.h"
#include "gimpdisplayshell-scroll.h"
#include "gimpdisplayshell-selection.h"
#include "gimpdisplayshell-title.h"
@ -531,11 +530,6 @@ gimp_display_shell_canvas_expose_image (GimpDisplayShell *shell,
/* finally, draw all the remaining image window stuff on top
*/
/* draw the transform tool preview */
cairo_save (cr);
gimp_display_shell_preview_transform (shell, cr);
cairo_restore (cr);
/* draw canvas items */
gimp_canvas_item_draw (shell->canvas_item, cr);

26
app/display/gimpdisplayshell-preview.h
View file

@ -1,26 +0,0 @@
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __GIMP_DISPLAY_SHELL_PREVIEW_H__
#define __GIMP_DISPLAY_SHELL_PREVIEW_H__
void gimp_display_shell_preview_transform (GimpDisplayShell *shell,
cairo_t *cr);
#endif /* __GIMP_DISPLAY_SHELL_PREVIEW_H__ */

1
app/display/gimpdisplayshell.h
View file

@ -179,7 +179,6 @@ struct _GimpDisplayShell
GimpTreeHandler *vectors_visible_handler;
gboolean zoom_on_resize;
gboolean show_transform_preview;
gboolean size_allocate_from_configure_event;

4
app/tools/gimprotatetool.c
View file

@ -381,8 +381,6 @@ rotate_angle_changed (GtkAdjustment *adj,
gimp_transform_tool_recalc (tr_tool, GIMP_TOOL (tr_tool)->display);
gimp_transform_tool_expose_preview (tr_tool);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tr_tool));
}
@ -408,8 +406,6 @@ rotate_center_changed (GtkWidget *widget,
gimp_transform_tool_recalc (tr_tool, GIMP_TOOL (tr_tool)->display);
gimp_transform_tool_expose_preview (tr_tool);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tr_tool));
}
}

2
app/tools/gimpscaletool.c
View file

@ -351,8 +351,6 @@ gimp_scale_tool_size_notify (GtkWidget *box,
gimp_transform_tool_recalc (tr_tool, GIMP_TOOL (tr_tool)->display);
gimp_transform_tool_expose_preview (tr_tool);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tr_tool));
}
}

4
app/tools/gimpsheartool.c
View file

@ -261,8 +261,6 @@ shear_x_mag_changed (GtkAdjustment *adj,
gimp_transform_tool_recalc (tr_tool, GIMP_TOOL (tr_tool)->display);
gimp_transform_tool_expose_preview (tr_tool);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tr_tool));
}
}
@ -284,8 +282,6 @@ shear_y_mag_changed (GtkAdjustment *adj,
gimp_transform_tool_recalc (tr_tool, GIMP_TOOL (tr_tool)->display);
gimp_transform_tool_expose_preview (tr_tool);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tr_tool));
}
}

206
app/tools/gimptransformtool.c
View file

@ -52,10 +52,9 @@
#include "widgets/gimpdialogfactory.h"
#include "display/gimpcanvasgroup.h"
#include "display/gimpcanvastransformpreview.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-appearance.h"
#include "display/gimpdisplayshell-expose.h"
#include "display/gimpdisplayshell-transform.h"
#include "display/gimptooldialog.h"
@ -144,8 +143,6 @@ static void gimp_transform_tool_grid_recalc (GimpTransformTool
static void gimp_transform_tool_handles_recalc (GimpTransformTool *tr_tool,
GimpDisplay *display);
static void gimp_transform_tool_force_expose_preview (GimpTransformTool *tr_tool);
static void gimp_transform_tool_response (GtkWidget *widget,
gint response_id,
GimpTransformTool *tr_tool);
@ -322,8 +319,6 @@ gimp_transform_tool_initialize (GimpTool *tool,
/* start drawing the bounding box and handles... */
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
gimp_transform_tool_expose_preview (tr_tool);
tr_tool->function = TRANSFORM_CREATING;
/* Save the current transformation info */
@ -422,9 +417,6 @@ gimp_transform_tool_button_release (GimpTool *tool,
/* recalculate the tool's transformation matrix */
gimp_transform_tool_recalc (tr_tool, display);
/* get rid of preview artifacts left outside the drawable's area */
gimp_transform_tool_expose_preview (tr_tool);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
@ -458,8 +450,6 @@ gimp_transform_tool_motion (GimpTool *tool,
tr_tool_class->motion (tr_tool, display);
gimp_transform_tool_recalc (tr_tool, display);
gimp_transform_tool_expose_preview (tr_tool);
}
tr_tool->lastx = tr_tool->curx;
@ -763,65 +753,6 @@ gimp_transform_tool_options_notify (GimpTool *tool,
}
}
if (! strcmp (pspec->name, "type") ||
! strcmp (pspec->name, "direction") ||
! strcmp (pspec->name, "preview-type") ||
! strcmp (pspec->name, "grid-type") ||
! strcmp (pspec->name, "grid-size") ||
! strcmp (pspec->name, "preview-opacity"))
{
GimpDisplayShell *shell = NULL;
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tr_tool)))
shell = gimp_display_get_shell (GIMP_DRAW_TOOL (tr_tool)->display);
switch (tr_options->preview_type)
{
default:
case GIMP_TRANSFORM_PREVIEW_TYPE_OUTLINE:
if (shell)
{
gimp_display_shell_set_show_transform (shell, FALSE);
gimp_transform_tool_force_expose_preview (tr_tool);
}
break;
case GIMP_TRANSFORM_PREVIEW_TYPE_GRID:
if (shell)
{
gimp_display_shell_set_show_transform (shell, FALSE);
gimp_transform_tool_force_expose_preview (tr_tool);
}
break;
case GIMP_TRANSFORM_PREVIEW_TYPE_IMAGE:
if (shell)
{
if (tr_options->type == GIMP_TRANSFORM_TYPE_LAYER &&
tr_options->direction == GIMP_TRANSFORM_FORWARD)
gimp_display_shell_set_show_transform (shell, TRUE);
else
gimp_display_shell_set_show_transform (shell, FALSE);
gimp_transform_tool_force_expose_preview (tr_tool);
}
break;
case GIMP_TRANSFORM_PREVIEW_TYPE_IMAGE_GRID:
if (shell)
{
if (tr_options->type == GIMP_TRANSFORM_TYPE_LAYER &&
tr_options->direction == GIMP_TRANSFORM_FORWARD)
gimp_display_shell_set_show_transform (shell, TRUE);
else
gimp_display_shell_set_show_transform (shell, FALSE);
gimp_transform_tool_force_expose_preview (tr_tool);
}
break;
}
}
if (tr_tool->function != TRANSFORM_CREATING)
{
gimp_transform_tool_grid_recalc (tr_tool);
@ -840,10 +771,25 @@ gimp_transform_tool_options_notify (GimpTool *tool,
static void
gimp_transform_tool_draw (GimpDrawTool *draw_tool)
{
GimpTool *tool = GIMP_TOOL (draw_tool);
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (draw_tool);
GimpImage *image = gimp_display_get_image (tool->display);
gdouble z1, z2, z3, z4;
GimpTool *tool = GIMP_TOOL (draw_tool);
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (draw_tool);
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool);
GimpImage *image = gimp_display_get_image (tool->display);
gdouble z1, z2, z3, z4;
if ((options->preview_type == GIMP_TRANSFORM_PREVIEW_TYPE_IMAGE ||
options->preview_type == GIMP_TRANSFORM_PREVIEW_TYPE_IMAGE_GRID) &&
options->type == GIMP_TRANSFORM_TYPE_LAYER &&
options->direction == GIMP_TRANSFORM_FORWARD)
{
GimpCanvasItem *item;
item = gimp_canvas_transform_preview_new (gimp_display_get_shell (draw_tool->display),
tr_tool,
options->preview_opacity);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
}
if (tr_tool->use_grid)
{
@ -1381,110 +1327,13 @@ gimp_transform_tool_transform_bounding_box (GimpTransformTool *tr_tool)
&tr_tool->tcx, &tr_tool->tcy);
}
void
gimp_transform_tool_expose_preview (GimpTransformTool *tr_tool)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
if ((options->preview_type == GIMP_TRANSFORM_PREVIEW_TYPE_IMAGE ||
options->preview_type == GIMP_TRANSFORM_PREVIEW_TYPE_IMAGE_GRID) &&
options->type == GIMP_TRANSFORM_TYPE_LAYER &&
options->direction == GIMP_TRANSFORM_FORWARD)
{
gimp_transform_tool_force_expose_preview (tr_tool);
}
}
static void
gimp_transform_tool_force_expose_preview (GimpTransformTool *tr_tool)
{
static gint last_x = 0;
static gint last_y = 0;
static gint last_w = 0;
static gint last_h = 0;
GimpDisplayShell *shell;
gdouble dx[4], dy[4];
gint area_x, area_y, area_w, area_h;
gint i;
g_return_if_fail (GIMP_IS_TRANSFORM_TOOL (tr_tool));
if (! tr_tool->use_grid)
return;
/* we might be called as the result of cancelling the transform
* tool dialog, return silently because the draw tool may have
* already been stopped by gimp_transform_tool_halt()
*/
if (! gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tr_tool)))
return;
shell = gimp_display_get_shell (GIMP_DRAW_TOOL (tr_tool)->display);
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);
/* find bounding box around preview */
area_x = area_w = (gint) dx[0];
area_y = area_h = (gint) dy[0];
for (i = 1; i < 4; i++)
{
if (dx[i] < area_x)
area_x = (gint) dx[i];
else if (dx[i] > area_w)
area_w = (gint) dx[i];
if (dy[i] < area_y)
area_y = (gint) dy[i];
else if (dy[i] > area_h)
area_h = (gint) dy[i];
}
area_w -= area_x;
area_h -= area_y;
gimp_display_shell_expose_area (shell,
MIN (area_x, last_x),
MIN (area_y, last_y),
MAX (area_w, last_w) + ABS (last_x - area_x),
MAX (area_h, last_h) + ABS (last_y - area_y));
/* area of last preview must be re-exposed to avoid leaving artifacts */
last_x = area_x;
last_y = area_y;
last_w = area_w;
last_h = area_h;
}
static void
gimp_transform_tool_halt (GimpTransformTool *tr_tool)
{
GimpTool *tool = GIMP_TOOL (tr_tool);
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tr_tool)))
{
GimpDisplayShell *shell;
shell = gimp_display_get_shell (GIMP_DRAW_TOOL (tr_tool)->display);
if (gimp_display_shell_get_show_transform (shell))
{
gimp_display_shell_set_show_transform (shell, FALSE);
/* get rid of preview artifacts left outside the drawable's area */
gimp_transform_tool_expose_preview (tr_tool);
}
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tr_tool));
}
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tr_tool));
/* inactivate the tool */
tr_tool->function = TRANSFORM_CREATING;
@ -1704,16 +1553,6 @@ gimp_transform_tool_prepare (GimpTransformTool *tr_tool,
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
GimpImage *image = gimp_display_get_image (display);
gboolean show_transform;
show_transform =
((options->preview_type == GIMP_TRANSFORM_PREVIEW_TYPE_IMAGE ||
options->preview_type == GIMP_TRANSFORM_PREVIEW_TYPE_IMAGE_GRID) &&
options->type == GIMP_TRANSFORM_TYPE_LAYER &&
options->direction == GIMP_TRANSFORM_FORWARD);
gimp_display_shell_set_show_transform (gimp_display_get_shell (display),
show_transform);
if (tr_tool->dialog)
{
@ -1772,9 +1611,6 @@ gimp_transform_tool_response (GtkWidget *widget,
/* recalculate the tool's transformation matrix */
gimp_transform_tool_recalc (tr_tool, tool->display);
/* get rid of preview artifacts left outside the drawable's area */
gimp_transform_tool_expose_preview (tr_tool);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
break;

7
app/tools/gimptransformtool.h
View file

@ -132,11 +132,10 @@ struct _GimpTransformToolClass
};
GType gimp_transform_tool_get_type (void) G_GNUC_CONST;
GType gimp_transform_tool_get_type (void) G_GNUC_CONST;
void gimp_transform_tool_recalc (GimpTransformTool *tr_tool,
GimpDisplay *display);
void gimp_transform_tool_expose_preview (GimpTransformTool *tr_tool);
void gimp_transform_tool_recalc (GimpTransformTool *tr_tool,
GimpDisplay *display);
#endif /* __GIMP_TRANSFORM_TOOL_H__ */