From 5c1676dfe6d2f3c837a5e074117b45613fd29a72 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:30:19 +0200 Subject: Adding upstream version 2.10.34. Signed-off-by: Daniel Baumann --- app/display/gimptoolrotategrid.c | 330 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 330 insertions(+) create mode 100644 app/display/gimptoolrotategrid.c (limited to 'app/display/gimptoolrotategrid.c') diff --git a/app/display/gimptoolrotategrid.c b/app/display/gimptoolrotategrid.c new file mode 100644 index 0000000..c583490 --- /dev/null +++ b/app/display/gimptoolrotategrid.c @@ -0,0 +1,330 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimptoolrotategrid.c + * Copyright (C) 2017 Michael Natterer + * + * 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 . + */ + +#include "config.h" + +#include +#include + +#include "libgimpbase/gimpbase.h" +#include "libgimpmath/gimpmath.h" + +#include "display-types.h" + +#include "core/gimp-transform-utils.h" +#include "core/gimp-utils.h" + +#include "gimpdisplayshell.h" +#include "gimptoolrotategrid.h" + +#include "gimp-intl.h" + + +enum +{ + PROP_0, + PROP_ANGLE +}; + + +struct _GimpToolRotateGridPrivate +{ + gdouble angle; + + gboolean rotate_grab; + gdouble real_angle; + gdouble last_x; + gdouble last_y; +}; + + +/* local function prototypes */ + +static void gimp_tool_rotate_grid_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec); +static void gimp_tool_rotate_grid_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec); + +static gint gimp_tool_rotate_grid_button_press (GimpToolWidget *widget, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpButtonPressType press_type); +static void gimp_tool_rotate_grid_motion (GimpToolWidget *widget, + const GimpCoords *coords, + guint32 time, + GdkModifierType state); + + +G_DEFINE_TYPE_WITH_PRIVATE (GimpToolRotateGrid, gimp_tool_rotate_grid, + GIMP_TYPE_TOOL_TRANSFORM_GRID) + +#define parent_class gimp_tool_rotate_grid_parent_class + + +static void +gimp_tool_rotate_grid_class_init (GimpToolRotateGridClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GimpToolWidgetClass *widget_class = GIMP_TOOL_WIDGET_CLASS (klass); + + object_class->set_property = gimp_tool_rotate_grid_set_property; + object_class->get_property = gimp_tool_rotate_grid_get_property; + + widget_class->button_press = gimp_tool_rotate_grid_button_press; + widget_class->motion = gimp_tool_rotate_grid_motion; + + g_object_class_install_property (object_class, PROP_ANGLE, + g_param_spec_double ("angle", + NULL, NULL, + -GIMP_MAX_IMAGE_SIZE, + GIMP_MAX_IMAGE_SIZE, + 0.0, + GIMP_PARAM_READWRITE | + G_PARAM_CONSTRUCT)); +} + +static void +gimp_tool_rotate_grid_init (GimpToolRotateGrid *grid) +{ + grid->private = gimp_tool_rotate_grid_get_instance_private (grid); +} + +static void +gimp_tool_rotate_grid_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + GimpToolRotateGrid *grid = GIMP_TOOL_ROTATE_GRID (object); + GimpToolRotateGridPrivate *private = grid->private; + + switch (property_id) + { + case PROP_ANGLE: + private->angle = g_value_get_double (value); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_tool_rotate_grid_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + GimpToolRotateGrid *grid = GIMP_TOOL_ROTATE_GRID (object); + GimpToolRotateGridPrivate *private = grid->private; + + switch (property_id) + { + case PROP_ANGLE: + g_value_set_double (value, private->angle); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static gint +gimp_tool_rotate_grid_button_press (GimpToolWidget *widget, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpButtonPressType press_type) +{ + GimpToolRotateGrid *grid = GIMP_TOOL_ROTATE_GRID (widget); + GimpToolRotateGridPrivate *private = grid->private; + GimpTransformHandle handle; + + handle = GIMP_TOOL_WIDGET_CLASS (parent_class)->button_press (widget, + coords, time, + state, + press_type); + + if (handle == GIMP_TRANSFORM_HANDLE_ROTATION) + { + private->rotate_grab = TRUE; + private->real_angle = private->angle; + private->last_x = coords->x; + private->last_y = coords->y; + } + else + { + private->rotate_grab = FALSE; + } + + return handle; +} + +void +gimp_tool_rotate_grid_motion (GimpToolWidget *widget, + const GimpCoords *coords, + guint32 time, + GdkModifierType state) +{ + GimpToolRotateGrid *grid = GIMP_TOOL_ROTATE_GRID (widget); + GimpToolRotateGridPrivate *private = grid->private; + gdouble angle1, angle2, angle; + gdouble pivot_x, pivot_y; + gdouble x1, y1, x2, y2; + gboolean constrain; + GimpMatrix3 transform; + + if (! private->rotate_grab) + { + gdouble old_pivot_x; + gdouble old_pivot_y; + + g_object_get (widget, + "pivot-x", &old_pivot_x, + "pivot-y", &old_pivot_y, + NULL); + + g_object_freeze_notify (G_OBJECT (widget)); + + GIMP_TOOL_WIDGET_CLASS (parent_class)->motion (widget, + coords, time, state); + + g_object_get (widget, + "pivot-x", &pivot_x, + "pivot-y", &pivot_y, + NULL); + + if (old_pivot_x != pivot_x || + old_pivot_y != pivot_y) + { + gimp_matrix3_identity (&transform); + gimp_transform_matrix_rotate_center (&transform, + pivot_x, pivot_y, + private->angle); + + g_object_set (widget, + "transform", &transform, + NULL); + } + + g_object_thaw_notify (G_OBJECT (widget)); + + return; + } + + g_object_get (widget, + "pivot-x", &pivot_x, + "pivot-y", &pivot_y, + "constrain-rotate", &constrain, + NULL); + + x1 = coords->x - pivot_x; + x2 = private->last_x - pivot_x; + y1 = pivot_y - coords->y; + y2 = pivot_y - private->last_y; + + /* find the first angle */ + angle1 = atan2 (y1, x1); + + /* find the angle */ + angle2 = atan2 (y2, x2); + + angle = angle2 - angle1; + + if (angle > G_PI || angle < -G_PI) + angle = angle2 - ((angle1 < 0) ? 2.0 * G_PI + angle1 : angle1 - 2.0 * G_PI); + + /* increment the transform tool's angle */ + private->real_angle += angle; + + /* limit the angle to between -180 and 180 degrees */ + if (private->real_angle < - G_PI) + { + private->real_angle += 2.0 * G_PI; + } + else if (private->real_angle > G_PI) + { + private->real_angle -= 2.0 * G_PI; + } + + /* constrain the angle to 15-degree multiples if ctrl is held down */ +#define FIFTEEN_DEG (G_PI / 12.0) + + if (constrain) + { + angle = FIFTEEN_DEG * (gint) ((private->real_angle + + FIFTEEN_DEG / 2.0) / FIFTEEN_DEG); + } + else + { + angle = private->real_angle; + } + + gimp_matrix3_identity (&transform); + gimp_transform_matrix_rotate_center (&transform, pivot_x, pivot_y, angle); + + g_object_set (widget, + "transform", &transform, + "angle", angle, + NULL); + + private->last_x = coords->x; + private->last_y = coords->y; +} + + +/* public functions */ + +GimpToolWidget * +gimp_tool_rotate_grid_new (GimpDisplayShell *shell, + gdouble x1, + gdouble y1, + gdouble x2, + gdouble y2, + gdouble pivot_x, + gdouble pivot_y, + gdouble angle) +{ + GimpMatrix3 transform; + + g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL); + + gimp_matrix3_identity (&transform); + gimp_transform_matrix_rotate_center (&transform, pivot_x, pivot_y, angle); + + return g_object_new (GIMP_TYPE_TOOL_ROTATE_GRID, + "shell", shell, + "transform", &transform, + "x1", x1, + "y1", y1, + "x2", x2, + "y2", y2, + "pivot-x", pivot_x, + "pivot-y", pivot_y, + "angle", angle, + NULL); +} -- cgit v1.2.3