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PIKApp/app/tools/pikatexttool-editor.c

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Initial checkin of Pika from heckimp
2023-09-26 00:35:21 +02:00
/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* PikaTextTool
* Copyright (C) 2002-2010 Sven Neumann <sven@gimp.org>
* Daniel Eddeland <danedde@svn.gnome.org>
* 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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libpikawidgets/pikawidgets.h"
#include "tools-types.h"
#include "core/pika.h"
#include "core/pikadatafactory.h"
#include "core/pikaimage.h"
#include "core/pikatoolinfo.h"
#include "menus/menus.h"
#include "text/pikatext.h"
#include "text/pikatextlayout.h"
#include "widgets/pikadialogfactory.h"
#include "widgets/pikadockcontainer.h"
#include "widgets/pikaoverlaybox.h"
#include "widgets/pikaoverlayframe.h"
#include "widgets/pikatextbuffer.h"
#include "widgets/pikatexteditor.h"
#include "widgets/pikatextproxy.h"
#include "widgets/pikatextstyleeditor.h"
#include "widgets/pikawidgets-utils.h"
#include "display/pikadisplay.h"
#include "display/pikadisplayshell.h"
#include "display/pikadisplayshell-transform.h"
#include "pikatextoptions.h"
#include "pikatexttool.h"
#include "pikatexttool-editor.h"
#include "pika-log.h"
#include "pika-intl.h"
/* local function prototypes */
static void pika_text_tool_ensure_proxy (PikaTextTool *text_tool);
static void pika_text_tool_move_cursor (PikaTextTool *text_tool,
GtkMovementStep step,
gint count,
gboolean extend_selection);
static void pika_text_tool_insert_at_cursor (PikaTextTool *text_tool,
const gchar *str);
static void pika_text_tool_delete_from_cursor (PikaTextTool *text_tool,
GtkDeleteType type,
gint count);
static void pika_text_tool_backspace (PikaTextTool *text_tool);
static void pika_text_tool_toggle_overwrite (PikaTextTool *text_tool);
static void pika_text_tool_select_all (PikaTextTool *text_tool,
gboolean select);
static void pika_text_tool_change_size (PikaTextTool *text_tool,
gdouble amount);
static void pika_text_tool_change_baseline (PikaTextTool *text_tool,
gdouble amount);
static void pika_text_tool_change_kerning (PikaTextTool *text_tool,
gdouble amount);
static void pika_text_tool_options_notify (PikaTextOptions *options,
GParamSpec *pspec,
PikaTextTool *text_tool);
static void pika_text_tool_editor_dialog (PikaTextTool *text_tool);
static void pika_text_tool_editor_destroy (GtkWidget *dialog,
PikaTextTool *text_tool);
static void pika_text_tool_enter_text (PikaTextTool *text_tool,
const gchar *str);
static void pika_text_tool_xy_to_iter (PikaTextTool *text_tool,
gdouble x,
gdouble y,
GtkTextIter *iter);
static void pika_text_tool_im_preedit_start (GtkIMContext *context,
PikaTextTool *text_tool);
static void pika_text_tool_im_preedit_end (GtkIMContext *context,
PikaTextTool *text_tool);
static void pika_text_tool_im_preedit_changed (GtkIMContext *context,
PikaTextTool *text_tool);
static void pika_text_tool_im_commit (GtkIMContext *context,
const gchar *str,
PikaTextTool *text_tool);
static gboolean pika_text_tool_im_retrieve_surrounding
(GtkIMContext *context,
PikaTextTool *text_tool);
static gboolean pika_text_tool_im_delete_surrounding
(GtkIMContext *context,
gint offset,
gint n_chars,
PikaTextTool *text_tool);
static void pika_text_tool_im_delete_preedit (PikaTextTool *text_tool);
static void pika_text_tool_editor_copy_selection_to_clipboard
(PikaTextTool *text_tool);
static void pika_text_tool_fix_position (PikaTextTool *text_tool,
gdouble *x,
gdouble *y);
static void pika_text_tool_convert_gdkkeyevent (PikaTextTool *text_tool,
GdkEventKey *kevent);
/* public functions */
void
pika_text_tool_editor_init (PikaTextTool *text_tool)
{
text_tool->im_context = gtk_im_multicontext_new ();
text_tool->needs_im_reset = FALSE;
text_tool->preedit_string = NULL;
text_tool->preedit_cursor = 0;
text_tool->overwrite_mode = FALSE;
text_tool->x_pos = -1;
g_signal_connect (text_tool->im_context, "preedit-start",
G_CALLBACK (pika_text_tool_im_preedit_start),
text_tool);
g_signal_connect (text_tool->im_context, "preedit-end",
G_CALLBACK (pika_text_tool_im_preedit_end),
text_tool);
g_signal_connect (text_tool->im_context, "preedit-changed",
G_CALLBACK (pika_text_tool_im_preedit_changed),
text_tool);
g_signal_connect (text_tool->im_context, "commit",
G_CALLBACK (pika_text_tool_im_commit),
text_tool);
g_signal_connect (text_tool->im_context, "retrieve-surrounding",
G_CALLBACK (pika_text_tool_im_retrieve_surrounding),
text_tool);
g_signal_connect (text_tool->im_context, "delete-surrounding",
G_CALLBACK (pika_text_tool_im_delete_surrounding),
text_tool);
}
void
pika_text_tool_editor_finalize (PikaTextTool *text_tool)
{
if (text_tool->im_context)
{
g_object_unref (text_tool->im_context);
text_tool->im_context = NULL;
}
}
void
pika_text_tool_editor_start (PikaTextTool *text_tool)
{
PikaTool *tool = PIKA_TOOL (text_tool);
PikaTextOptions *options = PIKA_TEXT_TOOL_GET_OPTIONS (text_tool);
PikaDisplayShell *shell = pika_display_get_shell (tool->display);
gtk_im_context_set_client_window (text_tool->im_context,
gtk_widget_get_window (shell->canvas));
text_tool->needs_im_reset = TRUE;
pika_text_tool_reset_im_context (text_tool);
gtk_im_context_focus_in (text_tool->im_context);
if (options->use_editor)
pika_text_tool_editor_dialog (text_tool);
g_signal_connect (options, "notify::use-editor",
G_CALLBACK (pika_text_tool_options_notify),
text_tool);
g_signal_connect (options, "notify::show-on-canvas",
G_CALLBACK (pika_text_tool_options_notify),
text_tool);
if (! text_tool->style_overlay)
{
Pika *pika = PIKA_CONTEXT (options)->pika;
PikaContainer *fonts;
gdouble xres = 1.0;
gdouble yres = 1.0;
text_tool->style_overlay = pika_overlay_frame_new ();
gtk_container_set_border_width (GTK_CONTAINER (text_tool->style_overlay),
4);
pika_display_shell_add_overlay (shell,
text_tool->style_overlay,
0, 0,
PIKA_HANDLE_ANCHOR_CENTER, 0, 0);
pika_overlay_box_set_child_opacity (PIKA_OVERLAY_BOX (shell->canvas),
text_tool->style_overlay, 0.85);
if (text_tool->image)
pika_image_get_resolution (text_tool->image, &xres, &yres);
fonts = pika_data_factory_get_container (pika->font_factory);
text_tool->style_editor = pika_text_style_editor_new (pika,
text_tool->proxy,
text_tool->buffer,
fonts,
xres, yres);
gtk_container_add (GTK_CONTAINER (text_tool->style_overlay),
text_tool->style_editor);
if (options->show_on_canvas)
gtk_widget_show (text_tool->style_editor);
}
pika_text_tool_editor_position (text_tool);
if (options->show_on_canvas)
gtk_widget_show (text_tool->style_overlay);
}
void
pika_text_tool_editor_position (PikaTextTool *text_tool)
{
if (text_tool->style_overlay)
{
PikaTool *tool = PIKA_TOOL (text_tool);
PikaDisplayShell *shell = pika_display_get_shell (tool->display);
GtkRequisition requisition;
gdouble x, y;
gtk_widget_get_preferred_size (text_tool->style_overlay,
&requisition, NULL);
g_object_get (text_tool->widget,
"x1", &x,
"y1", &y,
NULL);
pika_display_shell_move_overlay (shell,
text_tool->style_overlay,
x, y,
PIKA_HANDLE_ANCHOR_SOUTH_WEST, 4, 12);
if (text_tool->image)
{
gdouble xres, yres;
pika_image_get_resolution (text_tool->image, &xres, &yres);
g_object_set (text_tool->style_editor,
"resolution-x", xres,
"resolution-y", yres,
NULL);
}
}
}
void
pika_text_tool_editor_halt (PikaTextTool *text_tool)
{
PikaTextOptions *options = PIKA_TEXT_TOOL_GET_OPTIONS (text_tool);
if (text_tool->style_overlay)
{
gtk_widget_destroy (text_tool->style_overlay);
text_tool->style_overlay = NULL;
text_tool->style_editor = NULL;
}
g_signal_handlers_disconnect_by_func (options,
pika_text_tool_options_notify,
text_tool);
if (text_tool->editor_dialog)
{
g_signal_handlers_disconnect_by_func (text_tool->editor_dialog,
pika_text_tool_editor_destroy,
text_tool);
gtk_widget_destroy (text_tool->editor_dialog);
}
if (text_tool->proxy_text_view)
{
gtk_widget_destroy (text_tool->offscreen_window);
text_tool->offscreen_window = NULL;
text_tool->proxy_text_view = NULL;
}
text_tool->needs_im_reset = TRUE;
pika_text_tool_reset_im_context (text_tool);
gtk_im_context_focus_out (text_tool->im_context);
gtk_im_context_set_client_window (text_tool->im_context, NULL);
}
void
pika_text_tool_editor_button_press (PikaTextTool *text_tool,
gdouble x,
gdouble y,
PikaButtonPressType press_type)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter cursor;
GtkTextIter selection;
pika_text_tool_xy_to_iter (text_tool, x, y, &cursor);
selection = cursor;
text_tool->select_start_iter = cursor;
text_tool->select_words = FALSE;
text_tool->select_lines = FALSE;
switch (press_type)
{
GtkTextIter start, end;
case PIKA_BUTTON_PRESS_NORMAL:
if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end) ||
gtk_text_iter_compare (&start, &cursor))
gtk_text_buffer_place_cursor (buffer, &cursor);
break;
case PIKA_BUTTON_PRESS_DOUBLE:
text_tool->select_words = TRUE;
if (! gtk_text_iter_starts_word (&cursor))
gtk_text_iter_backward_visible_word_starts (&cursor, 1);
if (! gtk_text_iter_ends_word (&selection) &&
! gtk_text_iter_forward_visible_word_ends (&selection, 1))
gtk_text_iter_forward_to_line_end (&selection);
gtk_text_buffer_select_range (buffer, &cursor, &selection);
break;
case PIKA_BUTTON_PRESS_TRIPLE:
text_tool->select_lines = TRUE;
gtk_text_iter_set_line_offset (&cursor, 0);
gtk_text_iter_forward_to_line_end (&selection);
gtk_text_buffer_select_range (buffer, &cursor, &selection);
break;
}
}
void
pika_text_tool_editor_button_release (PikaTextTool *text_tool)
{
pika_text_tool_editor_copy_selection_to_clipboard (text_tool);
}
void
pika_text_tool_editor_motion (PikaTextTool *text_tool,
gdouble x,
gdouble y)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter old_cursor;
GtkTextIter old_selection;
GtkTextIter cursor;
GtkTextIter selection;
gtk_text_buffer_get_iter_at_mark (buffer, &old_cursor,
gtk_text_buffer_get_insert (buffer));
gtk_text_buffer_get_iter_at_mark (buffer, &old_selection,
gtk_text_buffer_get_selection_bound (buffer));
pika_text_tool_xy_to_iter (text_tool, x, y, &cursor);
selection = text_tool->select_start_iter;
if (text_tool->select_words ||
text_tool->select_lines)
{
GtkTextIter start;
GtkTextIter end;
if (gtk_text_iter_compare (&cursor, &selection) < 0)
{
start = cursor;
end = selection;
}
else
{
start = selection;
end = cursor;
}
if (text_tool->select_words)
{
if (! gtk_text_iter_starts_word (&start))
gtk_text_iter_backward_visible_word_starts (&start, 1);
if (! gtk_text_iter_ends_word (&end) &&
! gtk_text_iter_forward_visible_word_ends (&end, 1))
gtk_text_iter_forward_to_line_end (&end);
}
else if (text_tool->select_lines)
{
gtk_text_iter_set_line_offset (&start, 0);
gtk_text_iter_forward_to_line_end (&end);
}
if (gtk_text_iter_compare (&cursor, &selection) < 0)
{
cursor = start;
selection = end;
}
else
{
selection = start;
cursor = end;
}
}
if (! gtk_text_iter_equal (&cursor, &old_cursor) ||
! gtk_text_iter_equal (&selection, &old_selection))
{
pika_draw_tool_pause (PIKA_DRAW_TOOL (text_tool));
gtk_text_buffer_select_range (buffer, &cursor, &selection);
pika_draw_tool_resume (PIKA_DRAW_TOOL (text_tool));
}
}
gboolean
pika_text_tool_editor_key_press (PikaTextTool *text_tool,
GdkEventKey *kevent)
{
PikaTool *tool = PIKA_TOOL (text_tool);
PikaDisplayShell *shell = pika_display_get_shell (tool->display);
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter cursor;
GtkTextIter selection;
gboolean retval = TRUE;
if (! gtk_widget_has_focus (shell->canvas))
{
/* The focus is in the floating style editor, and the event
* was not handled there, focus the canvas.
*/
switch (kevent->keyval)
{
case GDK_KEY_Tab:
case GDK_KEY_KP_Tab:
case GDK_KEY_ISO_Left_Tab:
case GDK_KEY_Escape:
gtk_widget_grab_focus (shell->canvas);
return TRUE;
default:
break;
}
}
if (gtk_im_context_filter_keypress (text_tool->im_context, kevent))
{
text_tool->needs_im_reset = TRUE;
text_tool->x_pos = -1;
return TRUE;
}
pika_text_tool_convert_gdkkeyevent (text_tool, kevent);
pika_text_tool_ensure_proxy (text_tool);
if (gtk_bindings_activate_event (G_OBJECT (text_tool->proxy_text_view),
kevent))
{
PIKA_LOG (TEXT_EDITING, "binding handled event");
return TRUE;
}
gtk_text_buffer_get_iter_at_mark (buffer, &cursor,
gtk_text_buffer_get_insert (buffer));
gtk_text_buffer_get_iter_at_mark (buffer, &selection,
gtk_text_buffer_get_selection_bound (buffer));
switch (kevent->keyval)
{
case GDK_KEY_Return:
case GDK_KEY_KP_Enter:
case GDK_KEY_ISO_Enter:
pika_text_tool_reset_im_context (text_tool);
pika_text_tool_enter_text (text_tool, "\n");
break;
case GDK_KEY_Tab:
case GDK_KEY_KP_Tab:
case GDK_KEY_ISO_Left_Tab:
pika_text_tool_reset_im_context (text_tool);
pika_text_tool_enter_text (text_tool, "\t");
break;
case GDK_KEY_Escape:
pika_tool_control (PIKA_TOOL (text_tool), PIKA_TOOL_ACTION_HALT,
PIKA_TOOL (text_tool)->display);
break;
default:
retval = FALSE;
}
text_tool->x_pos = -1;
return retval;
}
gboolean
pika_text_tool_editor_key_release (PikaTextTool *text_tool,
GdkEventKey *kevent)
{
if (gtk_im_context_filter_keypress (text_tool->im_context, kevent))
{
text_tool->needs_im_reset = TRUE;
return TRUE;
}
pika_text_tool_convert_gdkkeyevent (text_tool, kevent);
pika_text_tool_ensure_proxy (text_tool);
if (gtk_bindings_activate_event (G_OBJECT (text_tool->proxy_text_view),
kevent))
{
PIKA_LOG (TEXT_EDITING, "binding handled event");
return TRUE;
}
return FALSE;
}
void
pika_text_tool_reset_im_context (PikaTextTool *text_tool)
{
if (text_tool->needs_im_reset)
{
text_tool->needs_im_reset = FALSE;
gtk_im_context_reset (text_tool->im_context);
}
}
void
pika_text_tool_abort_im_context (PikaTextTool *text_tool)
{
PikaTool *tool = PIKA_TOOL (text_tool);
PikaDisplayShell *shell = pika_display_get_shell (tool->display);
text_tool->needs_im_reset = TRUE;
pika_text_tool_reset_im_context (text_tool);
/* Making sure preedit text is removed. */
pika_text_tool_im_delete_preedit (text_tool);
/* the following lines seem to be the only way of really getting
* rid of any ongoing preedit state, please somebody tell me
* a clean way... mitch
*/
gtk_im_context_focus_out (text_tool->im_context);
gtk_im_context_set_client_window (text_tool->im_context, NULL);
g_object_unref (text_tool->im_context);
text_tool->im_context = gtk_im_multicontext_new ();
gtk_im_context_set_client_window (text_tool->im_context,
gtk_widget_get_window (shell->canvas));
gtk_im_context_focus_in (text_tool->im_context);
g_signal_connect (text_tool->im_context, "preedit-start",
G_CALLBACK (pika_text_tool_im_preedit_start),
text_tool);
g_signal_connect (text_tool->im_context, "preedit-end",
G_CALLBACK (pika_text_tool_im_preedit_end),
text_tool);
g_signal_connect (text_tool->im_context, "preedit-changed",
G_CALLBACK (pika_text_tool_im_preedit_changed),
text_tool);
g_signal_connect (text_tool->im_context, "commit",
G_CALLBACK (pika_text_tool_im_commit),
text_tool);
g_signal_connect (text_tool->im_context, "retrieve-surrounding",
G_CALLBACK (pika_text_tool_im_retrieve_surrounding),
text_tool);
g_signal_connect (text_tool->im_context, "delete-surrounding",
G_CALLBACK (pika_text_tool_im_delete_surrounding),
text_tool);
}
void
pika_text_tool_editor_get_cursor_rect (PikaTextTool *text_tool,
gboolean overwrite,
PangoRectangle *cursor_rect)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
PangoLayout *layout;
PangoContext *context;
gint offset_x;
gint offset_y;
GtkTextIter cursor;
gint cursor_index;
g_return_if_fail (PIKA_IS_TEXT_TOOL (text_tool));
g_return_if_fail (cursor_rect != NULL);
gtk_text_buffer_get_iter_at_mark (buffer, &cursor,
gtk_text_buffer_get_insert (buffer));
cursor_index = pika_text_buffer_get_iter_index (text_tool->buffer, &cursor,
TRUE);
pika_text_tool_ensure_layout (text_tool);
layout = pika_text_layout_get_pango_layout (text_tool->layout);
context = pango_layout_get_context (layout);
pika_text_layout_get_offsets (text_tool->layout, &offset_x, &offset_y);
if (overwrite)
{
pango_layout_index_to_pos (layout, cursor_index, cursor_rect);
/* pango_layout_index_to_pos() returns wrong position, if gravity is west
* and cursor is at end of line. Avoid this behavior. (pango 1.42.1)
*/
if (pango_context_get_base_gravity (context) == PANGO_GRAVITY_WEST &&
cursor_rect->width == 0)
pango_layout_get_cursor_pos (layout, cursor_index, cursor_rect, NULL);
}
else
pango_layout_get_cursor_pos (layout, cursor_index, cursor_rect, NULL);
pika_text_layout_transform_rect (text_tool->layout, cursor_rect);
switch (pika_text_tool_get_direction (text_tool))
{
case PIKA_TEXT_DIRECTION_LTR:
case PIKA_TEXT_DIRECTION_RTL:
cursor_rect->x = PANGO_PIXELS (cursor_rect->x) + offset_x;
cursor_rect->y = PANGO_PIXELS (cursor_rect->y) + offset_y;
cursor_rect->width = PANGO_PIXELS (cursor_rect->width);
cursor_rect->height = PANGO_PIXELS (cursor_rect->height);
break;
case PIKA_TEXT_DIRECTION_TTB_RTL:
case PIKA_TEXT_DIRECTION_TTB_RTL_UPRIGHT:
{
gint temp, width, height;
pika_text_layout_get_size (text_tool->layout, &width, &height);
temp = cursor_rect->x;
cursor_rect->x = width - PANGO_PIXELS (cursor_rect->y) + offset_x;
cursor_rect->y = PANGO_PIXELS (temp) + offset_y;
temp = cursor_rect->width;
cursor_rect->width = PANGO_PIXELS (cursor_rect->height);
cursor_rect->height = PANGO_PIXELS (temp);
}
break;
case PIKA_TEXT_DIRECTION_TTB_LTR:
case PIKA_TEXT_DIRECTION_TTB_LTR_UPRIGHT:
{
gint temp, width, height;
pika_text_layout_get_size (text_tool->layout, &width, &height);
temp = cursor_rect->x;
cursor_rect->x = PANGO_PIXELS (cursor_rect->y) + offset_x;
cursor_rect->y = height - PANGO_PIXELS (temp) + offset_y;
temp = cursor_rect->width;
cursor_rect->width = PANGO_PIXELS (cursor_rect->height);
cursor_rect->height = PANGO_PIXELS (temp);
}
break;
}
}
void
pika_text_tool_editor_update_im_cursor (PikaTextTool *text_tool)
{
PikaDisplayShell *shell;
PangoRectangle rect = { 0, };
gdouble off_x, off_y;
g_return_if_fail (PIKA_IS_TEXT_TOOL (text_tool));
shell = pika_display_get_shell (PIKA_TOOL (text_tool)->display);
if (text_tool->text)
pika_text_tool_editor_get_cursor_rect (text_tool,
text_tool->overwrite_mode,
&rect);
g_object_get (text_tool->widget,
"x1", &off_x,
"y1", &off_y,
NULL);
rect.x += off_x;
rect.y += off_y;
pika_display_shell_transform_xy (shell, rect.x, rect.y, &rect.x, &rect.y);
gtk_im_context_set_cursor_location (text_tool->im_context,
(GdkRectangle *) &rect);
}
/* private functions */
static void
pika_text_tool_ensure_proxy (PikaTextTool *text_tool)
{
PikaTool *tool = PIKA_TOOL (text_tool);
PikaDisplayShell *shell = pika_display_get_shell (tool->display);
if (text_tool->offscreen_window &&
gtk_widget_get_screen (text_tool->offscreen_window) !=
gtk_widget_get_screen (GTK_WIDGET (shell)))
{
gtk_window_set_screen (GTK_WINDOW (text_tool->offscreen_window),
gtk_widget_get_screen (GTK_WIDGET (shell)));
gtk_window_move (GTK_WINDOW (text_tool->offscreen_window), -200, -200);
}
else if (! text_tool->offscreen_window)
{
text_tool->offscreen_window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_screen (GTK_WINDOW (text_tool->offscreen_window),
gtk_widget_get_screen (GTK_WIDGET (shell)));
gtk_window_move (GTK_WINDOW (text_tool->offscreen_window), -200, -200);
gtk_widget_show (text_tool->offscreen_window);
text_tool->proxy_text_view = pika_text_proxy_new ();
gtk_container_add (GTK_CONTAINER (text_tool->offscreen_window),
text_tool->proxy_text_view);
gtk_widget_show (text_tool->proxy_text_view);
g_signal_connect_swapped (text_tool->proxy_text_view, "move-cursor",
G_CALLBACK (pika_text_tool_move_cursor),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "insert-at-cursor",
G_CALLBACK (pika_text_tool_insert_at_cursor),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "delete-from-cursor",
G_CALLBACK (pika_text_tool_delete_from_cursor),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "backspace",
G_CALLBACK (pika_text_tool_backspace),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "cut-clipboard",
G_CALLBACK (pika_text_tool_cut_clipboard),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "copy-clipboard",
G_CALLBACK (pika_text_tool_copy_clipboard),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "paste-clipboard",
G_CALLBACK (pika_text_tool_paste_clipboard),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "toggle-overwrite",
G_CALLBACK (pika_text_tool_toggle_overwrite),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "select-all",
G_CALLBACK (pika_text_tool_select_all),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "change-size",
G_CALLBACK (pika_text_tool_change_size),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "change-baseline",
G_CALLBACK (pika_text_tool_change_baseline),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "change-kerning",
G_CALLBACK (pika_text_tool_change_kerning),
text_tool);
}
}
static void
pika_text_tool_move_cursor (PikaTextTool *text_tool,
GtkMovementStep step,
gint count,
gboolean extend_selection)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter cursor;
GtkTextIter selection;
GtkTextIter *sel_start;
gboolean cancel_selection = FALSE;
gint x_pos = -1;
if (text_tool->pending)
{
/* If there are any pending text commits, there would be
* inconsistencies between the text_tool->buffer and layout.
* This could result in crashes. See bug 751333.
* Therefore we apply them first.
*/
pika_text_tool_apply (text_tool, TRUE);
}
PIKA_LOG (TEXT_EDITING, "%s count = %d, select = %s",
g_enum_get_value (g_type_class_ref (GTK_TYPE_MOVEMENT_STEP),
step)->value_name,
count,
extend_selection ? "TRUE" : "FALSE");
gtk_text_buffer_get_iter_at_mark (buffer, &cursor,
gtk_text_buffer_get_insert (buffer));
gtk_text_buffer_get_iter_at_mark (buffer, &selection,
gtk_text_buffer_get_selection_bound (buffer));
if (extend_selection)
{
sel_start = &selection;
}
else
{
/* when there is a selection, moving the cursor without
* extending it should move the cursor to the end of the
* selection that is in moving direction
*/
if (count > 0)
gtk_text_iter_order (&selection, &cursor);
else
gtk_text_iter_order (&cursor, &selection);
sel_start = &cursor;
/* if we actually have a selection, just move *to* the beginning/end
* of the selection and not *from* there on LOGICAL_POSITIONS
* and VISUAL_POSITIONS movement
*/
if (! gtk_text_iter_equal (&cursor, &selection))
cancel_selection = TRUE;
}
switch (step)
{
case GTK_MOVEMENT_LOGICAL_POSITIONS:
if (! cancel_selection)
gtk_text_iter_forward_visible_cursor_positions (&cursor, count);
break;
case GTK_MOVEMENT_VISUAL_POSITIONS:
if (! cancel_selection)
{
PangoLayout *layout;
const gchar *text;
if (! pika_text_tool_ensure_layout (text_tool))
break;
layout = pika_text_layout_get_pango_layout (text_tool->layout);
text = pango_layout_get_text (layout);
while (count != 0)
{
const gunichar word_joiner = 8288; /*g_utf8_get_char(WORD_JOINER);*/
gint index;
gint trailing = 0;
gint new_index;
index = pika_text_buffer_get_iter_index (text_tool->buffer,
&cursor, TRUE);
if (count > 0)
{
if (g_utf8_get_char (text + index) == word_joiner)
pango_layout_move_cursor_visually (layout, TRUE,
index, 0, 1,
&new_index, &trailing);
else
new_index = index;
pango_layout_move_cursor_visually (layout, TRUE,
new_index, trailing, 1,
&new_index, &trailing);
count--;
}
else
{
pango_layout_move_cursor_visually (layout, TRUE,
index, 0, -1,
&new_index, &trailing);
if (new_index != -1 && new_index != G_MAXINT &&
g_utf8_get_char (text + new_index) == word_joiner)
{
pango_layout_move_cursor_visually (layout, TRUE,
new_index, trailing, -1,
&new_index, &trailing);
}
count++;
}
if (new_index != G_MAXINT && new_index != -1)
index = new_index;
else
break;
pika_text_buffer_get_iter_at_index (text_tool->buffer,
&cursor, index, TRUE);
gtk_text_iter_forward_chars (&cursor, trailing);
}
}
break;
case GTK_MOVEMENT_WORDS:
if (count < 0)
{
gtk_text_iter_backward_visible_word_starts (&cursor, -count);
}
else if (count > 0)
{
if (! gtk_text_iter_forward_visible_word_ends (&cursor, count))
gtk_text_iter_forward_to_line_end (&cursor);
}
break;
case GTK_MOVEMENT_DISPLAY_LINES:
{
GtkTextIter start;
GtkTextIter end;
gint cursor_index;
PangoLayout *layout;
PangoLayoutLine *layout_line;
PangoLayoutIter *layout_iter;
PangoRectangle logical;
gint line;
gint trailing;
gint i;
gtk_text_buffer_get_bounds (buffer, &start, &end);
cursor_index = pika_text_buffer_get_iter_index (text_tool->buffer,
&cursor, TRUE);
if (! pika_text_tool_ensure_layout (text_tool))
break;
layout = pika_text_layout_get_pango_layout (text_tool->layout);
pango_layout_index_to_line_x (layout, cursor_index, FALSE,
&line, &x_pos);
layout_iter = pango_layout_get_iter (layout);
for (i = 0; i < line; i++)
pango_layout_iter_next_line (layout_iter);
pango_layout_iter_get_line_extents (layout_iter, NULL, &logical);
x_pos += logical.x;
pango_layout_iter_free (layout_iter);
/* try to go to the remembered x_pos if it exists *and* we are at
* the beginning or at the end of the current line
*/
if (text_tool->x_pos != -1 && (x_pos <= logical.x ||
x_pos >= logical.x + logical.width))
x_pos = text_tool->x_pos;
line += count;
if (line < 0)
{
cursor = start;
break;
}
else if (line >= pango_layout_get_line_count (layout))
{
cursor = end;
break;
}
layout_iter = pango_layout_get_iter (layout);
for (i = 0; i < line; i++)
pango_layout_iter_next_line (layout_iter);
layout_line = pango_layout_iter_get_line_readonly (layout_iter);
pango_layout_iter_get_line_extents (layout_iter, NULL, &logical);
pango_layout_iter_free (layout_iter);
pango_layout_line_x_to_index (layout_line, x_pos - logical.x,
&cursor_index, &trailing);
pika_text_buffer_get_iter_at_index (text_tool->buffer, &cursor,
cursor_index, TRUE);
while (trailing--)
gtk_text_iter_forward_char (&cursor);
}
break;
case GTK_MOVEMENT_PAGES: /* well... */
case GTK_MOVEMENT_BUFFER_ENDS:
if (count < 0)
{
gtk_text_buffer_get_start_iter (buffer, &cursor);
}
else if (count > 0)
{
gtk_text_buffer_get_end_iter (buffer, &cursor);
}
break;
case GTK_MOVEMENT_PARAGRAPH_ENDS:
if (count < 0)
{
gtk_text_iter_set_line_offset (&cursor, 0);
}
else if (count > 0)
{
if (! gtk_text_iter_ends_line (&cursor))
gtk_text_iter_forward_to_line_end (&cursor);
}
break;
case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
if (count < 0)
{
gtk_text_iter_set_line_offset (&cursor, 0);
}
else if (count > 0)
{
if (! gtk_text_iter_ends_line (&cursor))
gtk_text_iter_forward_to_line_end (&cursor);
}
break;
default:
return;
}
text_tool->x_pos = x_pos;
pika_draw_tool_pause (PIKA_DRAW_TOOL (text_tool));
pika_text_tool_reset_im_context (text_tool);
gtk_text_buffer_select_range (buffer, &cursor, sel_start);
pika_text_tool_editor_copy_selection_to_clipboard (text_tool);
pika_draw_tool_resume (PIKA_DRAW_TOOL (text_tool));
}
static void
pika_text_tool_insert_at_cursor (PikaTextTool *text_tool,
const gchar *str)
{
pika_text_buffer_insert (text_tool->buffer, str);
}
static gboolean
is_whitespace (gunichar ch,
gpointer user_data)
{
return (ch == ' ' || ch == '\t');
}
static gboolean
is_not_whitespace (gunichar ch,
gpointer user_data)
{
return ! is_whitespace (ch, user_data);
}
static gboolean
find_whitepace_region (const GtkTextIter *center,
GtkTextIter *start,
GtkTextIter *end)
{
*start = *center;
*end = *center;
if (gtk_text_iter_backward_find_char (start, is_not_whitespace, NULL, NULL))
gtk_text_iter_forward_char (start); /* we want the first whitespace... */
if (is_whitespace (gtk_text_iter_get_char (end), NULL))
gtk_text_iter_forward_find_char (end, is_not_whitespace, NULL, NULL);
return ! gtk_text_iter_equal (start, end);
}
static void
pika_text_tool_delete_from_cursor (PikaTextTool *text_tool,
GtkDeleteType type,
gint count)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter cursor;
GtkTextIter end;
PIKA_LOG (TEXT_EDITING, "%s count = %d",
g_enum_get_value (g_type_class_ref (GTK_TYPE_DELETE_TYPE),
type)->value_name,
count);
pika_text_tool_reset_im_context (text_tool);
gtk_text_buffer_get_iter_at_mark (buffer, &cursor,
gtk_text_buffer_get_insert (buffer));
end = cursor;
switch (type)
{
case GTK_DELETE_CHARS:
if (gtk_text_buffer_get_has_selection (buffer))
{
gtk_text_buffer_delete_selection (buffer, TRUE, TRUE);
return;
}
else
{
gtk_text_iter_forward_cursor_positions (&end, count);
}
break;
case GTK_DELETE_WORD_ENDS:
if (count < 0)
{
if (! gtk_text_iter_starts_word (&cursor))
gtk_text_iter_backward_visible_word_starts (&cursor, 1);
}
else if (count > 0)
{
if (! gtk_text_iter_ends_word (&end) &&
! gtk_text_iter_forward_visible_word_ends (&end, 1))
gtk_text_iter_forward_to_line_end (&end);
}
break;
case GTK_DELETE_WORDS:
if (! gtk_text_iter_starts_word (&cursor))
gtk_text_iter_backward_visible_word_starts (&cursor, 1);
if (! gtk_text_iter_ends_word (&end) &&
! gtk_text_iter_forward_visible_word_ends (&end, 1))
gtk_text_iter_forward_to_line_end (&end);
break;
case GTK_DELETE_DISPLAY_LINES:
break;
case GTK_DELETE_DISPLAY_LINE_ENDS:
break;
case GTK_DELETE_PARAGRAPH_ENDS:
if (count < 0)
{
gtk_text_iter_set_line_offset (&cursor, 0);
}
else if (count > 0)
{
if (! gtk_text_iter_ends_line (&end))
gtk_text_iter_forward_to_line_end (&end);
else
gtk_text_iter_forward_cursor_positions (&end, 1);
}
break;
case GTK_DELETE_PARAGRAPHS:
break;
case GTK_DELETE_WHITESPACE:
find_whitepace_region (&cursor, &cursor, &end);
break;
}
if (! gtk_text_iter_equal (&cursor, &end))
{
gtk_text_buffer_delete_interactive (buffer, &cursor, &end, TRUE);
}
}
static void
pika_text_tool_backspace (PikaTextTool *text_tool)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
pika_text_tool_reset_im_context (text_tool);
if (gtk_text_buffer_get_has_selection (buffer))
{
gtk_text_buffer_delete_selection (buffer, TRUE, TRUE);
}
else
{
GtkTextIter cursor;
gtk_text_buffer_get_iter_at_mark (buffer, &cursor,
gtk_text_buffer_get_insert (buffer));
gtk_text_buffer_backspace (buffer, &cursor, TRUE, TRUE);
}
}
static void
pika_text_tool_toggle_overwrite (PikaTextTool *text_tool)
{
pika_draw_tool_pause (PIKA_DRAW_TOOL (text_tool));
text_tool->overwrite_mode = ! text_tool->overwrite_mode;
pika_draw_tool_resume (PIKA_DRAW_TOOL (text_tool));
}
static void
pika_text_tool_select_all (PikaTextTool *text_tool,
gboolean select)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
pika_draw_tool_pause (PIKA_DRAW_TOOL (text_tool));
if (select)
{
GtkTextIter start, end;
gtk_text_buffer_get_bounds (buffer, &start, &end);
gtk_text_buffer_select_range (buffer, &start, &end);
}
else
{
GtkTextIter cursor;
gtk_text_buffer_get_iter_at_mark (buffer, &cursor,
gtk_text_buffer_get_insert (buffer));
gtk_text_buffer_move_mark_by_name (buffer, "selection_bound", &cursor);
}
pika_draw_tool_resume (PIKA_DRAW_TOOL (text_tool));
}
static void
pika_text_tool_change_size (PikaTextTool *text_tool,
gdouble amount)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter start;
GtkTextIter end;
if (! gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
{
return;
}
gtk_text_iter_order (&start, &end);
pika_text_buffer_change_size (text_tool->buffer, &start, &end,
amount * PANGO_SCALE);
}
static void
pika_text_tool_change_baseline (PikaTextTool *text_tool,
gdouble amount)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter start;
GtkTextIter end;
if (! gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
{
gtk_text_buffer_get_iter_at_mark (buffer, &start,
gtk_text_buffer_get_insert (buffer));
gtk_text_buffer_get_end_iter (buffer, &end);
}
gtk_text_iter_order (&start, &end);
pika_text_buffer_change_baseline (text_tool->buffer, &start, &end,
amount * PANGO_SCALE);
}
static void
pika_text_tool_change_kerning (PikaTextTool *text_tool,
gdouble amount)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter start;
GtkTextIter end;
if (! gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
{
gtk_text_buffer_get_iter_at_mark (buffer, &start,
gtk_text_buffer_get_insert (buffer));
end = start;
gtk_text_iter_forward_char (&end);
}
gtk_text_iter_order (&start, &end);
pika_text_buffer_change_kerning (text_tool->buffer, &start, &end,
amount * PANGO_SCALE);
}
static void
pika_text_tool_options_notify (PikaTextOptions *options,
GParamSpec *pspec,
PikaTextTool *text_tool)
{
const gchar *param_name = g_param_spec_get_name (pspec);
if (! strcmp (param_name, "use-editor"))
{
if (options->use_editor)
{
pika_text_tool_editor_dialog (text_tool);
}
else
{
if (text_tool->editor_dialog)
gtk_widget_destroy (text_tool->editor_dialog);
}
}
else if (! strcmp (param_name, "show-on-canvas"))
{
gtk_widget_set_visible (text_tool->style_editor,
options->show_on_canvas);
gtk_widget_set_visible (text_tool->style_overlay,
options->show_on_canvas);
}
}
static void
pika_text_tool_editor_dialog (PikaTextTool *text_tool)
{
PikaTool *tool = PIKA_TOOL (text_tool);
PikaTextOptions *options = PIKA_TEXT_TOOL_GET_OPTIONS (text_tool);
PikaDisplayShell *shell = pika_display_get_shell (tool->display);
PikaImageWindow *image_window;
PikaDialogFactory *dialog_factory;
GtkWindow *parent = NULL;
gdouble xres = 1.0;
gdouble yres = 1.0;
if (text_tool->editor_dialog)
{
gtk_window_present (GTK_WINDOW (text_tool->editor_dialog));
return;
}
image_window = pika_display_shell_get_window (shell);
dialog_factory = pika_dock_container_get_dialog_factory (PIKA_DOCK_CONTAINER (image_window));
if (text_tool->image)
pika_image_get_resolution (text_tool->image, &xres, &yres);
g_set_weak_pointer
(&text_tool->editor_dialog,
pika_text_options_editor_new (parent, tool->tool_info->pika, options,
menus_get_global_menu_factory (tool->tool_info->pika),
_("PIKA Text Editor"),
text_tool->proxy, text_tool->buffer,
xres, yres));
pika_dialog_factory_add_foreign (dialog_factory,
"pika-text-tool-dialog",
text_tool->editor_dialog,
pika_widget_get_monitor (GTK_WIDGET (image_window)));
g_signal_connect (text_tool->editor_dialog, "destroy",
G_CALLBACK (pika_text_tool_editor_destroy),
text_tool);
gtk_widget_show (text_tool->editor_dialog);
}
static void
pika_text_tool_editor_destroy (GtkWidget *dialog,
PikaTextTool *text_tool)
{
PikaTextOptions *options = PIKA_TEXT_TOOL_GET_OPTIONS (text_tool);
g_object_set (options,
"use-editor", FALSE,
NULL);
}
static void
pika_text_tool_enter_text (PikaTextTool *text_tool,
const gchar *str)
{
GtkTextBuffer *buffer;
gboolean had_selection;
buffer = GTK_TEXT_BUFFER (text_tool->buffer);
had_selection = gtk_text_buffer_get_has_selection (buffer);
gtk_text_buffer_begin_user_action (buffer);
if (! had_selection && text_tool->overwrite_mode && strcmp (str, "\n"))
{
GtkTextIter cursor;
gtk_text_buffer_get_iter_at_mark (buffer, &cursor,
gtk_text_buffer_get_insert (buffer));
if (! gtk_text_iter_ends_line (&cursor))
pika_text_tool_delete_from_cursor (text_tool, GTK_DELETE_CHARS, 1);
}
if (had_selection)
{
GtkTextIter start, end;
GList *insert_tags = NULL;
GList *remove_tags = NULL;
gtk_text_buffer_get_selection_bounds (buffer, &start, &end);
gtk_text_iter_order (&start, &end);
insert_tags = pika_text_buffer_get_tags_on_iter (text_tool->buffer, &start);
pika_text_tool_delete_selection (text_tool);
remove_tags = pika_text_buffer_get_all_tags (text_tool->buffer);
pika_text_buffer_set_insert_tags (text_tool->buffer,
insert_tags, remove_tags);
}
pika_text_buffer_insert (text_tool->buffer, str);
gtk_text_buffer_end_user_action (buffer);
}
static void
pika_text_tool_xy_to_iter (PikaTextTool *text_tool,
gdouble x,
gdouble y,
GtkTextIter *iter)
{
PangoLayout *layout;
gint offset_x;
gint offset_y;
gint index;
gint trailing;
pika_text_tool_ensure_layout (text_tool);
pika_text_layout_untransform_point (text_tool->layout, &x, &y);
pika_text_layout_get_offsets (text_tool->layout, &offset_x, &offset_y);
x -= offset_x;
y -= offset_y;
layout = pika_text_layout_get_pango_layout (text_tool->layout);
pika_text_tool_fix_position (text_tool, &x, &y);
pango_layout_xy_to_index (layout,
x * PANGO_SCALE,
y * PANGO_SCALE,
&index, &trailing);
pika_text_buffer_get_iter_at_index (text_tool->buffer, iter, index, TRUE);
if (trailing)
gtk_text_iter_forward_char (iter);
}
static void
pika_text_tool_im_preedit_start (GtkIMContext *context,
PikaTextTool *text_tool)
{
PIKA_LOG (TEXT_EDITING, "preedit start");
text_tool->preedit_active = TRUE;
}
static void
pika_text_tool_im_preedit_end (GtkIMContext *context,
PikaTextTool *text_tool)
{
pika_text_tool_delete_selection (text_tool);
text_tool->preedit_active = FALSE;
PIKA_LOG (TEXT_EDITING, "preedit end");
}
static void
pika_text_tool_im_preedit_changed (GtkIMContext *context,
PikaTextTool *text_tool)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
PangoAttrList *attrs;
PIKA_LOG (TEXT_EDITING, "preedit changed");
gtk_text_buffer_begin_user_action (buffer);
pika_text_tool_im_delete_preedit (text_tool);
pika_text_tool_delete_selection (text_tool);
gtk_im_context_get_preedit_string (context,
&text_tool->preedit_string, &attrs,
&text_tool->preedit_cursor);
if (text_tool->preedit_string && *text_tool->preedit_string)
{
PangoAttrIterator *attr_iter;
GtkTextIter iter;
gint i;
/* Save the preedit start position. */
gtk_text_buffer_get_iter_at_mark (buffer, &iter,
gtk_text_buffer_get_insert (buffer));
text_tool->preedit_start = gtk_text_buffer_create_mark (buffer,
"preedit-start",
&iter, TRUE);
/* Loop through chunks of preedit text with different attributes. */
attr_iter = pango_attr_list_get_iterator (attrs);
do
{
const gchar *valid_preedit_end;
gint attr_start;
gint attr_end;
pango_attr_iterator_range (attr_iter, &attr_start, &attr_end);
if (attr_start < strlen (text_tool->preedit_string))
{
GSList *attrs_pos;
GtkTextMark *start_mark;
GtkTextIter start;
GtkTextIter end;
gtk_text_buffer_get_iter_at_mark (buffer, &start,
gtk_text_buffer_get_insert (buffer));
start_mark = gtk_text_buffer_create_mark (buffer,
NULL,
&start, TRUE);
gtk_text_buffer_begin_user_action (buffer);
/*
* Returned attribute end by pango_attr_iterator_range()
* may be G_MAXINT to mean the string end, though somehow
* we only encountered this in Wayland. Anyway let's take
* this possibility into account.
*/
if (attr_end > strlen (text_tool->preedit_string))
attr_end = strlen (text_tool->preedit_string);
/* Double check encoding validity. */
if (! g_utf8_validate (text_tool->preedit_string + attr_start, attr_end - attr_start, &valid_preedit_end))
g_warning ("%s: preedit string is not valid UTF-8.", G_STRFUNC);
/* Insert the preedit chunk at current cursor position. */
gtk_text_buffer_insert_at_cursor (GTK_TEXT_BUFFER (text_tool->buffer),
text_tool->preedit_string + attr_start,
valid_preedit_end - text_tool->preedit_string - attr_start);
gtk_text_buffer_get_iter_at_mark (buffer, &start,
start_mark);
gtk_text_buffer_delete_mark (buffer, start_mark);
gtk_text_buffer_get_iter_at_mark (buffer, &end,
gtk_text_buffer_get_insert (buffer));
/* Apply text attributes to preedit text. */
attrs_pos = pango_attr_iterator_get_attrs (attr_iter);
while (attrs_pos)
{
PangoAttribute *attr = attrs_pos->data;
if (attr)
{
switch (attr->klass->type)
{
case PANGO_ATTR_UNDERLINE:
gtk_text_buffer_apply_tag (buffer,
text_tool->buffer->preedit_underline_tag,
&start, &end);
break;
case PANGO_ATTR_BACKGROUND:
case PANGO_ATTR_FOREGROUND:
{
PangoAttrColor *color_attr = (PangoAttrColor *) attr;
PikaRGB color;
color.r = (gdouble) color_attr->color.red / 65535.0;
color.g = (gdouble) color_attr->color.green / 65535.0;
color.b = (gdouble) color_attr->color.blue / 65535.0;
if (attr->klass->type == PANGO_ATTR_BACKGROUND)
{
pika_text_buffer_set_preedit_bg_color (text_tool->buffer,
&start, &end,
&color);
}
else
{
pika_text_buffer_set_preedit_color (text_tool->buffer,
&start, &end,
&color);
}
}
break;
default:
/* Unsupported tags. */
break;
}
}
attrs_pos = attrs_pos->next;
}
gtk_text_buffer_end_user_action (buffer);
}
}
while (pango_attr_iterator_next (attr_iter));
/* Save the preedit end position. */
gtk_text_buffer_get_iter_at_mark (buffer, &iter,
gtk_text_buffer_get_insert (buffer));
text_tool->preedit_end = gtk_text_buffer_create_mark (buffer,
"preedit-end",
&iter, FALSE);
/* Move the cursor to the expected location. */
gtk_text_buffer_get_iter_at_mark (buffer, &iter, text_tool->preedit_start);
for (i = 0; i < text_tool->preedit_cursor; i++)
gtk_text_iter_forward_char (&iter);
gtk_text_buffer_place_cursor (buffer, &iter);
pango_attr_iterator_destroy (attr_iter);
}
pango_attr_list_unref (attrs);
gtk_text_buffer_end_user_action (buffer);
}
static void
pika_text_tool_im_commit (GtkIMContext *context,
const gchar *str,
PikaTextTool *text_tool)
{
gboolean preedit_active = text_tool->preedit_active;
pika_text_tool_im_delete_preedit (text_tool);
/* Some IMEs would emit a preedit-commit before preedit-end.
* To keep undo consistency, we fake and end then immediate restart of
* preediting.
*/
if (preedit_active)
pika_text_tool_im_preedit_end (context, text_tool);
pika_text_tool_enter_text (text_tool, str);
if (preedit_active)
pika_text_tool_im_preedit_start (context, text_tool);
}
static gboolean
pika_text_tool_im_retrieve_surrounding (GtkIMContext *context,
PikaTextTool *text_tool)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter start;
GtkTextIter end;
gint pos;
gchar *text;
gtk_text_buffer_get_iter_at_mark (buffer, &start,
gtk_text_buffer_get_insert (buffer));
end = start;
pos = gtk_text_iter_get_line_index (&start);
gtk_text_iter_set_line_offset (&start, 0);
gtk_text_iter_forward_to_line_end (&end);
text = gtk_text_iter_get_slice (&start, &end);
gtk_im_context_set_surrounding (context, text, -1, pos);
g_free (text);
return TRUE;
}
static gboolean
pika_text_tool_im_delete_surrounding (GtkIMContext *context,
gint offset,
gint n_chars,
PikaTextTool *text_tool)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter start;
GtkTextIter end;
gtk_text_buffer_get_iter_at_mark (buffer, &start,
gtk_text_buffer_get_insert (buffer));
end = start;
gtk_text_iter_forward_chars (&start, offset);
gtk_text_iter_forward_chars (&end, offset + n_chars);
gtk_text_buffer_delete_interactive (buffer, &start, &end, TRUE);
return TRUE;
}
static void
pika_text_tool_im_delete_preedit (PikaTextTool *text_tool)
{
if (text_tool->preedit_string)
{
if (*text_tool->preedit_string)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter start;
GtkTextIter end;
gtk_text_buffer_get_iter_at_mark (buffer, &start,
text_tool->preedit_start);
gtk_text_buffer_get_iter_at_mark (buffer, &end,
text_tool->preedit_end);
gtk_text_buffer_delete_interactive (buffer, &start, &end, TRUE);
gtk_text_buffer_delete_mark (buffer, text_tool->preedit_start);
gtk_text_buffer_delete_mark (buffer, text_tool->preedit_end);
text_tool->preedit_start = NULL;
text_tool->preedit_end = NULL;
}
g_clear_pointer (&text_tool->preedit_string, g_free);
}
}
static void
pika_text_tool_editor_copy_selection_to_clipboard (PikaTextTool *text_tool)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
if (! text_tool->editor_dialog &&
gtk_text_buffer_get_has_selection (buffer))
{
PikaTool *tool = PIKA_TOOL (text_tool);
PikaDisplayShell *shell = pika_display_get_shell (tool->display);
GtkClipboard *clipboard;
clipboard = gtk_widget_get_clipboard (GTK_WIDGET (shell),
GDK_SELECTION_PRIMARY);
gtk_text_buffer_copy_clipboard (buffer, clipboard);
}
}
static void
pika_text_tool_fix_position (PikaTextTool *text_tool,
gdouble *x,
gdouble *y)
{
gint temp, width, height;
pika_text_layout_get_size (text_tool->layout, &width, &height);
switch (pika_text_tool_get_direction(text_tool))
{
case PIKA_TEXT_DIRECTION_RTL:
case PIKA_TEXT_DIRECTION_LTR:
break;
case PIKA_TEXT_DIRECTION_TTB_RTL:
case PIKA_TEXT_DIRECTION_TTB_RTL_UPRIGHT:
temp = width - *x;
*x = *y;
*y = temp;
break;
case PIKA_TEXT_DIRECTION_TTB_LTR:
case PIKA_TEXT_DIRECTION_TTB_LTR_UPRIGHT:
temp = *x;
*x = height - *y;
*y = temp;
break;
}
}
static void
pika_text_tool_convert_gdkkeyevent (PikaTextTool *text_tool,
GdkEventKey *kevent)
{
switch (pika_text_tool_get_direction (text_tool))
{
case PIKA_TEXT_DIRECTION_LTR:
case PIKA_TEXT_DIRECTION_RTL:
break;
case PIKA_TEXT_DIRECTION_TTB_RTL:
case PIKA_TEXT_DIRECTION_TTB_RTL_UPRIGHT:
#ifdef _WIN32
switch (kevent->keyval)
{
case GDK_KEY_Up:
kevent->hardware_keycode = 0x25;/* VK_LEFT */
kevent->keyval = GDK_KEY_Left;
break;
case GDK_KEY_Down:
kevent->hardware_keycode = 0x27;/* VK_RIGHT */
kevent->keyval = GDK_KEY_Right;
break;
case GDK_KEY_Left:
kevent->hardware_keycode = 0x28;/* VK_DOWN */
kevent->keyval = GDK_KEY_Down;
break;
case GDK_KEY_Right:
kevent->hardware_keycode = 0x26;/* VK_UP */
kevent->keyval = GDK_KEY_Up;
break;
}
#else
switch (kevent->keyval)
{
case GDK_KEY_Up:
kevent->hardware_keycode = 113;
kevent->keyval = GDK_KEY_Left;
break;
case GDK_KEY_Down:
kevent->hardware_keycode = 114;
kevent->keyval = GDK_KEY_Right;
break;
case GDK_KEY_Left:
kevent->hardware_keycode = 116;
kevent->keyval = GDK_KEY_Down;
break;
case GDK_KEY_Right:
kevent->hardware_keycode = 111;
kevent->keyval = GDK_KEY_Up;
break;
}
#endif
break;
case PIKA_TEXT_DIRECTION_TTB_LTR:
case PIKA_TEXT_DIRECTION_TTB_LTR_UPRIGHT:
#ifdef _WIN32
switch (kevent->keyval)
{
case GDK_KEY_Up:
kevent->hardware_keycode = 0x26;/* VK_UP */
kevent->keyval = GDK_KEY_Up;
break;
case GDK_KEY_Down:
kevent->hardware_keycode = 0x28;/* VK_DOWN */
kevent->keyval = GDK_KEY_Down;
break;
case GDK_KEY_Left:
kevent->hardware_keycode = 0x25;/* VK_LEFT */
kevent->keyval = GDK_KEY_Left;
break;
case GDK_KEY_Right:
kevent->hardware_keycode = 0x27;/* VK_RIGHT */
kevent->keyval = GDK_KEY_Right;
break;
}
#else
switch (kevent->keyval)
{
case GDK_KEY_Up:
kevent->hardware_keycode = 114;
kevent->keyval = GDK_KEY_Right;
break;
case GDK_KEY_Down:
kevent->hardware_keycode = 113;
kevent->keyval = GDK_KEY_Left;
break;
case GDK_KEY_Left:
kevent->hardware_keycode = 111;
kevent->keyval = GDK_KEY_Up;
break;
case GDK_KEY_Right:
kevent->hardware_keycode = 116;
kevent->keyval = GDK_KEY_Down;
break;
}
#endif
break;
}
}