diff options
Diffstat (limited to 'app/tools/gimpsheartool.c')
| -rw-r--r-- | app/tools/gimpsheartool.c | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/app/tools/gimpsheartool.c b/app/tools/gimpsheartool.c new file mode 100644 index 0000000..9d76adf --- /dev/null +++ b/app/tools/gimpsheartool.c @@ -0,0 +1,331 @@ +/* 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 <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <gegl.h> +#include <gtk/gtk.h> + +#include "libgimpmath/gimpmath.h" +#include "libgimpwidgets/gimpwidgets.h" + +#include "tools-types.h" + +#include "core/gimp-transform-utils.h" + +#include "widgets/gimphelp-ids.h" +#include "widgets/gimpspinscale.h" + +#include "display/gimpdisplay.h" +#include "display/gimptoolgui.h" +#include "display/gimptoolsheargrid.h" + +#include "gimpsheartool.h" +#include "gimptoolcontrol.h" +#include "gimptransformgridoptions.h" + +#include "gimp-intl.h" + + +/* index into trans_info array */ +enum +{ + ORIENTATION, + SHEAR_X, + SHEAR_Y +}; + + +#define SB_WIDTH 10 + + +/* local function prototypes */ + +static gboolean gimp_shear_tool_info_to_matrix (GimpTransformGridTool *tg_tool, + GimpMatrix3 *transform); +static gchar * gimp_shear_tool_get_undo_desc (GimpTransformGridTool *tg_tool); +static void gimp_shear_tool_dialog (GimpTransformGridTool *tg_tool); +static void gimp_shear_tool_dialog_update (GimpTransformGridTool *tg_tool); +static void gimp_shear_tool_prepare (GimpTransformGridTool *tg_tool); +static GimpToolWidget * gimp_shear_tool_get_widget (GimpTransformGridTool *tg_tool); +static void gimp_shear_tool_update_widget (GimpTransformGridTool *tg_tool); +static void gimp_shear_tool_widget_changed (GimpTransformGridTool *tg_tool); + +static void shear_x_mag_changed (GtkAdjustment *adj, + GimpTransformGridTool *tg_tool); +static void shear_y_mag_changed (GtkAdjustment *adj, + GimpTransformGridTool *tg_tool); + + +G_DEFINE_TYPE (GimpShearTool, gimp_shear_tool, GIMP_TYPE_TRANSFORM_GRID_TOOL) + +#define parent_class gimp_shear_tool_parent_class + + +void +gimp_shear_tool_register (GimpToolRegisterCallback callback, + gpointer data) +{ + (* callback) (GIMP_TYPE_SHEAR_TOOL, + GIMP_TYPE_TRANSFORM_GRID_OPTIONS, + gimp_transform_grid_options_gui, + 0, + "gimp-shear-tool", + _("Shear"), + _("Shear Tool: Shear the layer, selection or path"), + N_("S_hear"), "<shift>H", + NULL, GIMP_HELP_TOOL_SHEAR, + GIMP_ICON_TOOL_SHEAR, + data); +} + +static void +gimp_shear_tool_class_init (GimpShearToolClass *klass) +{ + GimpTransformToolClass *tr_class = GIMP_TRANSFORM_TOOL_CLASS (klass); + GimpTransformGridToolClass *tg_class = GIMP_TRANSFORM_GRID_TOOL_CLASS (klass); + + tg_class->info_to_matrix = gimp_shear_tool_info_to_matrix; + tg_class->get_undo_desc = gimp_shear_tool_get_undo_desc; + tg_class->dialog = gimp_shear_tool_dialog; + tg_class->dialog_update = gimp_shear_tool_dialog_update; + tg_class->prepare = gimp_shear_tool_prepare; + tg_class->get_widget = gimp_shear_tool_get_widget; + tg_class->update_widget = gimp_shear_tool_update_widget; + tg_class->widget_changed = gimp_shear_tool_widget_changed; + + tr_class->progress_text = C_("undo-type", "Shear"); + tr_class->progress_text = _("Shearing"); + tg_class->ok_button_label = _("_Shear"); +} + +static void +gimp_shear_tool_init (GimpShearTool *shear_tool) +{ + GimpTool *tool = GIMP_TOOL (shear_tool); + + gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_SHEAR); +} + +static gboolean +gimp_shear_tool_info_to_matrix (GimpTransformGridTool *tg_tool, + GimpMatrix3 *transform) +{ + GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool); + gdouble amount; + + if (tg_tool->trans_info[SHEAR_X] == 0.0 && + tg_tool->trans_info[SHEAR_Y] == 0.0) + { + tg_tool->trans_info[ORIENTATION] = GIMP_ORIENTATION_UNKNOWN; + } + + if (tg_tool->trans_info[ORIENTATION] == GIMP_ORIENTATION_HORIZONTAL) + amount = tg_tool->trans_info[SHEAR_X]; + else + amount = tg_tool->trans_info[SHEAR_Y]; + + gimp_matrix3_identity (transform); + gimp_transform_matrix_shear (transform, + tr_tool->x1, + tr_tool->y1, + tr_tool->x2 - tr_tool->x1, + tr_tool->y2 - tr_tool->y1, + tg_tool->trans_info[ORIENTATION], + amount); + + return TRUE; +} + +static gchar * +gimp_shear_tool_get_undo_desc (GimpTransformGridTool *tg_tool) +{ + gdouble x = tg_tool->trans_info[SHEAR_X]; + gdouble y = tg_tool->trans_info[SHEAR_Y]; + + switch ((gint) tg_tool->trans_info[ORIENTATION]) + { + case GIMP_ORIENTATION_HORIZONTAL: + return g_strdup_printf (C_("undo-type", "Shear horizontally by %-3.3g"), + x); + + case GIMP_ORIENTATION_VERTICAL: + return g_strdup_printf (C_("undo-type", "Shear vertically by %-3.3g"), + y); + + default: + /* e.g. user entered numbers but no notification callback */ + return g_strdup_printf (C_("undo-type", "Shear horizontally by %-3.3g, vertically by %-3.3g"), + x, y); + } +} + +static void +gimp_shear_tool_dialog (GimpTransformGridTool *tg_tool) +{ + GimpShearTool *shear = GIMP_SHEAR_TOOL (tg_tool); + GtkWidget *vbox; + GtkWidget *scale; + + vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2); + gtk_box_pack_start (GTK_BOX (gimp_tool_gui_get_vbox (tg_tool->gui)), vbox, + FALSE, FALSE, 0); + gtk_widget_show (vbox); + + shear->x_adj = (GtkAdjustment *) + gtk_adjustment_new (0, -65536, 65536, 1, 10, 0); + scale = gimp_spin_scale_new (shear->x_adj, _("Shear magnitude _X"), 0); + gimp_spin_scale_set_scale_limits (GIMP_SPIN_SCALE (scale), -1000, 1000); + gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0); + gtk_widget_show (scale); + + g_signal_connect (shear->x_adj, "value-changed", + G_CALLBACK (shear_x_mag_changed), + tg_tool); + + shear->y_adj = (GtkAdjustment *) + gtk_adjustment_new (0, -65536, 65536, 1, 10, 0); + scale = gimp_spin_scale_new (shear->y_adj, _("Shear magnitude _Y"), 0); + gimp_spin_scale_set_scale_limits (GIMP_SPIN_SCALE (scale), -1000, 1000); + gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0); + gtk_widget_show (scale); + + g_signal_connect (shear->y_adj, "value-changed", + G_CALLBACK (shear_y_mag_changed), + tg_tool); +} + +static void +gimp_shear_tool_dialog_update (GimpTransformGridTool *tg_tool) +{ + GimpShearTool *shear = GIMP_SHEAR_TOOL (tg_tool); + + gtk_adjustment_set_value (shear->x_adj, tg_tool->trans_info[SHEAR_X]); + gtk_adjustment_set_value (shear->y_adj, tg_tool->trans_info[SHEAR_Y]); +} + +static void +gimp_shear_tool_prepare (GimpTransformGridTool *tg_tool) +{ + tg_tool->trans_info[ORIENTATION] = GIMP_ORIENTATION_UNKNOWN; + tg_tool->trans_info[SHEAR_X] = 0.0; + tg_tool->trans_info[SHEAR_Y] = 0.0; +} + +static GimpToolWidget * +gimp_shear_tool_get_widget (GimpTransformGridTool *tg_tool) +{ + GimpTool *tool = GIMP_TOOL (tg_tool); + GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool); + GimpDisplayShell *shell = gimp_display_get_shell (tool->display); + GimpToolWidget *widget; + + widget = gimp_tool_shear_grid_new (shell, + tr_tool->x1, + tr_tool->y1, + tr_tool->x2, + tr_tool->y2, + tg_tool->trans_info[ORIENTATION], + tg_tool->trans_info[SHEAR_X], + tg_tool->trans_info[SHEAR_Y]); + + g_object_set (widget, + "inside-function", GIMP_TRANSFORM_FUNCTION_SHEAR, + "outside-function", GIMP_TRANSFORM_FUNCTION_SHEAR, + "frompivot-shear", TRUE, + NULL); + + return widget; +} + +static void +gimp_shear_tool_update_widget (GimpTransformGridTool *tg_tool) +{ + GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool); + + GIMP_TRANSFORM_GRID_TOOL_CLASS (parent_class)->update_widget (tg_tool); + + g_object_set (tg_tool->widget, + "x1", (gdouble) tr_tool->x1, + "y1", (gdouble) tr_tool->y1, + "x2", (gdouble) tr_tool->x2, + "y2", (gdouble) tr_tool->y2, + "orientation", (gint) tg_tool->trans_info[ORIENTATION], + "shear-x", tg_tool->trans_info[SHEAR_X], + "shear-y", tg_tool->trans_info[SHEAR_Y], + NULL); +} + +static void +gimp_shear_tool_widget_changed (GimpTransformGridTool *tg_tool) +{ + GimpOrientationType orientation; + + g_object_get (tg_tool->widget, + "orientation", &orientation, + "shear-x", &tg_tool->trans_info[SHEAR_X], + "shear-y", &tg_tool->trans_info[SHEAR_Y], + NULL); + + tg_tool->trans_info[ORIENTATION] = orientation; + + GIMP_TRANSFORM_GRID_TOOL_CLASS (parent_class)->widget_changed (tg_tool); +} + +static void +shear_x_mag_changed (GtkAdjustment *adj, + GimpTransformGridTool *tg_tool) +{ + gdouble value = gtk_adjustment_get_value (adj); + + if (value != tg_tool->trans_info[SHEAR_X]) + { + GimpTool *tool = GIMP_TOOL (tg_tool); + GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool); + + tg_tool->trans_info[ORIENTATION] = GIMP_ORIENTATION_HORIZONTAL; + + tg_tool->trans_info[SHEAR_X] = value; + tg_tool->trans_info[SHEAR_Y] = 0.0; /* can only shear in one axis */ + + gimp_transform_grid_tool_push_internal_undo (tg_tool, TRUE); + + gimp_transform_tool_recalc_matrix (tr_tool, tool->display); + } +} + +static void +shear_y_mag_changed (GtkAdjustment *adj, + GimpTransformGridTool *tg_tool) +{ + gdouble value = gtk_adjustment_get_value (adj); + + if (value != tg_tool->trans_info[SHEAR_Y]) + { + GimpTool *tool = GIMP_TOOL (tg_tool); + GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool); + + tg_tool->trans_info[ORIENTATION] = GIMP_ORIENTATION_VERTICAL; + + tg_tool->trans_info[SHEAR_Y] = value; + tg_tool->trans_info[SHEAR_X] = 0.0; /* can only shear in one axis */ + + gimp_transform_grid_tool_push_internal_undo (tg_tool, TRUE); + + gimp_transform_tool_recalc_matrix (tr_tool, tool->display); + } +} |