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gimp/app/tools/gimptexttool-editor.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* GimpTextTool
* 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp.h"
#include "core/gimpimage.h"
#include "core/gimptoolinfo.h"
#include "text/gimptext.h"
#include "text/gimptextlayout.h"
#include "widgets/gimpdialogfactory.h"
#include "widgets/gimpoverlaybox.h"
#include "widgets/gimpoverlayframe.h"
#include "widgets/gimptextbuffer.h"
#include "widgets/gimptexteditor.h"
#include "widgets/gimptextproxy.h"
#include "widgets/gimptextstyleeditor.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "gimprectangletool.h"
#include "gimptextoptions.h"
#include "gimptexttool.h"
#include "gimptexttool-editor.h"
#include "gimp-log.h"
#include "gimp-intl.h"
/* local function prototypes */
static void gimp_text_tool_ensure_proxy (GimpTextTool *text_tool);
static void gimp_text_tool_move_cursor (GimpTextTool *text_tool,
GtkMovementStep step,
gint count,
gboolean extend_selection);
static void gimp_text_tool_insert_at_cursor (GimpTextTool *text_tool,
const gchar *str);
static void gimp_text_tool_delete_from_cursor (GimpTextTool *text_tool,
GtkDeleteType type,
gint count);
static void gimp_text_tool_backspace (GimpTextTool *text_tool);
static void gimp_text_tool_toggle_overwrite (GimpTextTool *text_tool);
static void gimp_text_tool_select_all (GimpTextTool *text_tool,
gboolean select);
static void gimp_text_tool_change_size (GimpTextTool *text_tool,
gdouble amount);
static void gimp_text_tool_change_baseline (GimpTextTool *text_tool,
gdouble amount);
static void gimp_text_tool_change_kerning (GimpTextTool *text_tool,
gdouble amount);
static void gimp_text_tool_options_notify (GimpTextOptions *options,
GParamSpec *pspec,
GimpTextTool *text_tool);
static void gimp_text_tool_editor_dialog (GimpTextTool *text_tool);
static void gimp_text_tool_editor_destroy (GtkWidget *dialog,
GimpTextTool *text_tool);
static void gimp_text_tool_enter_text (GimpTextTool *text_tool,
const gchar *str);
static void gimp_text_tool_xy_to_iter (GimpTextTool *text_tool,
gdouble x,
gdouble y,
GtkTextIter *iter);
static void gimp_text_tool_im_commit (GtkIMContext *context,
const gchar *str,
GimpTextTool *text_tool);
static void gimp_text_tool_im_preedit_start (GtkIMContext *context,
GimpTextTool *text_tool);
static void gimp_text_tool_im_preedit_end (GtkIMContext *context,
GimpTextTool *text_tool);
static void gimp_text_tool_im_preedit_changed (GtkIMContext *context,
GimpTextTool *text_tool);
/* public functions */
void
gimp_text_tool_editor_init (GimpTextTool *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, "commit",
G_CALLBACK (gimp_text_tool_im_commit),
text_tool);
g_signal_connect (text_tool->im_context, "preedit-start",
G_CALLBACK (gimp_text_tool_im_preedit_start),
text_tool);
g_signal_connect (text_tool->im_context, "preedit-end",
G_CALLBACK (gimp_text_tool_im_preedit_end),
text_tool);
g_signal_connect (text_tool->im_context, "preedit-changed",
G_CALLBACK (gimp_text_tool_im_preedit_changed),
text_tool);
}
void
gimp_text_tool_editor_finalize (GimpTextTool *text_tool)
{
if (text_tool->im_context)
{
g_object_unref (text_tool->im_context);
text_tool->im_context = NULL;
}
}
void
gimp_text_tool_editor_start (GimpTextTool *text_tool)
{
GimpTool *tool = GIMP_TOOL (text_tool);
GimpTextOptions *options = GIMP_TEXT_TOOL_GET_OPTIONS (text_tool);
GimpDisplayShell *shell = gimp_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;
gimp_text_tool_reset_im_context (text_tool);
gtk_im_context_focus_in (text_tool->im_context);
if (options->use_editor)
gimp_text_tool_editor_dialog (text_tool);
g_signal_connect (options, "notify::use-editor",
G_CALLBACK (gimp_text_tool_options_notify),
text_tool);
if (! text_tool->style_overlay)
{
Gimp *gimp = GIMP_CONTEXT (options)->gimp;
gdouble xres = 1.0;
gdouble yres = 1.0;
text_tool->style_overlay = gimp_overlay_frame_new ();
gtk_container_set_border_width (GTK_CONTAINER (text_tool->style_overlay),
4);
gimp_display_shell_add_overlay (shell,
text_tool->style_overlay,
0, 0,
GIMP_HANDLE_ANCHOR_CENTER, 0, 0);
gimp_overlay_box_set_child_opacity (GIMP_OVERLAY_BOX (shell->canvas),
text_tool->style_overlay, 0.7);
if (text_tool->image)
gimp_image_get_resolution (text_tool->image, &xres, &yres);
text_tool->style_editor = gimp_text_style_editor_new (gimp,
text_tool->proxy,
text_tool->buffer,
gimp->fonts,
xres, yres);
gtk_container_add (GTK_CONTAINER (text_tool->style_overlay),
text_tool->style_editor);
gtk_widget_show (text_tool->style_editor);
}
gimp_text_tool_editor_position (text_tool);
gtk_widget_show (text_tool->style_overlay);
}
void
gimp_text_tool_editor_position (GimpTextTool *text_tool)
{
if (text_tool->style_overlay)
{
GimpTool *tool = GIMP_TOOL (text_tool);
GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
GtkRequisition requisition;
gint x, y;
gtk_widget_size_request (text_tool->style_overlay, &requisition);
g_object_get (text_tool,
"x1", &x,
"y1", &y,
NULL);
gimp_display_shell_move_overlay (shell,
text_tool->style_overlay,
x, y,
GIMP_HANDLE_ANCHOR_SOUTH_WEST, 4, 12);
if (text_tool->image)
{
gdouble xres, yres;
gimp_image_get_resolution (text_tool->image, &xres, &yres);
g_object_set (text_tool->style_editor,
"resolution-x", xres,
"resolution-y", yres,
NULL);
}
}
}
void
gimp_text_tool_editor_halt (GimpTextTool *text_tool)
{
GimpTextOptions *options = GIMP_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,
gimp_text_tool_options_notify,
text_tool);
if (text_tool->editor_dialog)
{
g_signal_handlers_disconnect_by_func (text_tool->editor_dialog,
gimp_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;
gimp_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
gimp_text_tool_editor_button_press (GimpTextTool *text_tool,
gdouble x,
gdouble y,
GimpButtonPressType press_type)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter cursor;
GtkTextIter selection;
gimp_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)
{
case GIMP_BUTTON_PRESS_NORMAL:
gtk_text_buffer_place_cursor (buffer, &cursor);
break;
case GIMP_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 GIMP_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
gimp_text_tool_editor_button_release (GimpTextTool *text_tool)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
if (gtk_text_buffer_get_has_selection (buffer))
{
GimpTool *tool = GIMP_TOOL (text_tool);
GimpDisplayShell *shell = gimp_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);
}
}
void
gimp_text_tool_editor_motion (GimpTextTool *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));
gimp_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))
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (text_tool));
gtk_text_buffer_select_range (buffer, &cursor, &selection);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (text_tool));
}
}
gboolean
gimp_text_tool_editor_key_press (GimpTextTool *text_tool,
GdkEventKey *kevent)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter cursor;
GtkTextIter selection;
gint x_pos = -1;
gboolean retval = TRUE;
if (gtk_im_context_filter_keypress (text_tool->im_context, kevent))
{
text_tool->needs_im_reset = TRUE;
text_tool->x_pos = -1;
return TRUE;
}
gimp_text_tool_ensure_proxy (text_tool);
if (gtk_bindings_activate_event (GTK_OBJECT (text_tool->proxy_text_view),
kevent))
{
GIMP_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:
gimp_text_tool_reset_im_context (text_tool);
gimp_text_tool_enter_text (text_tool, "\n");
break;
case GDK_KEY_Tab:
case GDK_KEY_KP_Tab:
case GDK_KEY_ISO_Left_Tab:
gimp_text_tool_reset_im_context (text_tool);
gimp_text_tool_enter_text (text_tool, "\t");
break;
case GDK_KEY_Escape:
gimp_rectangle_tool_cancel (GIMP_RECTANGLE_TOOL (text_tool));
gimp_tool_control (GIMP_TOOL (text_tool), GIMP_TOOL_ACTION_HALT,
GIMP_TOOL (text_tool)->display);
break;
default:
retval = FALSE;
}
text_tool->x_pos = x_pos;
return retval;
}
gboolean
gimp_text_tool_editor_key_release (GimpTextTool *text_tool,
GdkEventKey *kevent)
{
if (gtk_im_context_filter_keypress (text_tool->im_context, kevent))
{
text_tool->needs_im_reset = TRUE;
return TRUE;
}
gimp_text_tool_ensure_proxy (text_tool);
if (gtk_bindings_activate_event (GTK_OBJECT (text_tool->proxy_text_view),
kevent))
{
GIMP_LOG (TEXT_EDITING, "binding handled event");
return TRUE;
}
return FALSE;
}
void
gimp_text_tool_reset_im_context (GimpTextTool *text_tool)
{
if (text_tool->needs_im_reset)
{
text_tool->needs_im_reset = FALSE;
gtk_im_context_reset (text_tool->im_context);
}
}
void
gimp_text_tool_editor_get_cursor_rect (GimpTextTool *text_tool,
gboolean overwrite,
PangoRectangle *cursor_rect)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
PangoLayout *layout;
gint offset_x;
gint offset_y;
GtkTextIter cursor;
gint cursor_index;
g_return_if_fail (GIMP_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 = gimp_text_buffer_get_iter_index (text_tool->buffer, &cursor,
TRUE);
gimp_text_tool_ensure_layout (text_tool);
layout = gimp_text_layout_get_pango_layout (text_tool->layout);
gimp_text_layout_get_offsets (text_tool->layout, &offset_x, &offset_y);
if (overwrite)
pango_layout_index_to_pos (layout, cursor_index, cursor_rect);
else
pango_layout_get_cursor_pos (layout, cursor_index, cursor_rect, NULL);
gimp_text_layout_transform_rect (text_tool->layout, cursor_rect);
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);
}
/* private functions */
static void
gimp_text_tool_ensure_proxy (GimpTextTool *text_tool)
{
GimpTool *tool = GIMP_TOOL (text_tool);
GimpDisplayShell *shell = gimp_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 = gimp_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 (gimp_text_tool_move_cursor),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "insert-at-cursor",
G_CALLBACK (gimp_text_tool_insert_at_cursor),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "delete-from-cursor",
G_CALLBACK (gimp_text_tool_delete_from_cursor),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "backspace",
G_CALLBACK (gimp_text_tool_backspace),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "cut-clipboard",
G_CALLBACK (gimp_text_tool_cut_clipboard),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "copy-clipboard",
G_CALLBACK (gimp_text_tool_copy_clipboard),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "paste-clipboard",
G_CALLBACK (gimp_text_tool_paste_clipboard),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "toggle-overwrite",
G_CALLBACK (gimp_text_tool_toggle_overwrite),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "select-all",
G_CALLBACK (gimp_text_tool_select_all),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "change-size",
G_CALLBACK (gimp_text_tool_change_size),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "change-baseline",
G_CALLBACK (gimp_text_tool_change_baseline),
text_tool);
g_signal_connect_swapped (text_tool->proxy_text_view, "change-kerning",
G_CALLBACK (gimp_text_tool_change_kerning),
text_tool);
}
}
static void
gimp_text_tool_move_cursor (GimpTextTool *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;
GIMP_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;
if (! gimp_text_tool_ensure_layout (text_tool))
break;
layout = gimp_text_layout_get_pango_layout (text_tool->layout);
while (count != 0)
{
gint index;
gint trailing;
gint new_index;
index = gimp_text_buffer_get_iter_index (text_tool->buffer,
&cursor, TRUE);
if (count > 0)
{
pango_layout_move_cursor_visually (layout, TRUE, index, 0, 1,
&new_index, &trailing);
count--;
}
else
{
pango_layout_move_cursor_visually (layout, TRUE, index, 0, -1,
&new_index, &trailing);
count++;
}
if (new_index != G_MAXINT && new_index != -1)
index = new_index;
else
break;
gimp_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 = gimp_text_buffer_get_iter_index (text_tool->buffer,
&cursor, TRUE);
if (! gimp_text_tool_ensure_layout (text_tool))
break;
layout = gimp_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);
gimp_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;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (text_tool));
gimp_text_tool_reset_im_context (text_tool);
gtk_text_buffer_select_range (buffer, &cursor, sel_start);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (text_tool));
}
static void
gimp_text_tool_insert_at_cursor (GimpTextTool *text_tool,
const gchar *str)
{
gimp_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
gimp_text_tool_delete_from_cursor (GimpTextTool *text_tool,
GtkDeleteType type,
gint count)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
GtkTextIter cursor;
GtkTextIter end;
GIMP_LOG (TEXT_EDITING, "%s count = %d",
g_enum_get_value (g_type_class_ref (GTK_TYPE_DELETE_TYPE),
type)->value_name,
count);
gimp_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
gimp_text_tool_backspace (GimpTextTool *text_tool)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
gimp_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
gimp_text_tool_toggle_overwrite (GimpTextTool *text_tool)
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (text_tool));
text_tool->overwrite_mode = ! text_tool->overwrite_mode;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (text_tool));
}
static void
gimp_text_tool_select_all (GimpTextTool *text_tool,
gboolean select)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
gimp_draw_tool_pause (GIMP_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);
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (text_tool));
}
static void
gimp_text_tool_change_size (GimpTextTool *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);
gimp_text_buffer_change_size (text_tool->buffer, &start, &end,
amount * PANGO_SCALE);
}
static void
gimp_text_tool_change_baseline (GimpTextTool *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);
gimp_text_buffer_change_baseline (text_tool->buffer, &start, &end,
amount * PANGO_SCALE);
}
static void
gimp_text_tool_change_kerning (GimpTextTool *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);
gimp_text_buffer_change_kerning (text_tool->buffer, &start, &end,
amount * PANGO_SCALE);
}
static void
gimp_text_tool_options_notify (GimpTextOptions *options,
GParamSpec *pspec,
GimpTextTool *text_tool)
{
const gchar *param_name = g_param_spec_get_name (pspec);
if (! strcmp (param_name, "use-editor"))
{
if (options->use_editor)
{
if (text_tool->text)
gimp_text_tool_editor_dialog (text_tool);
}
else
{
if (text_tool->editor_dialog)
gtk_widget_destroy (text_tool->editor_dialog);
}
}
}
static void
gimp_text_tool_editor_dialog (GimpTextTool *text_tool)
{
GimpTool *tool = GIMP_TOOL (text_tool);
GimpTextOptions *options = GIMP_TEXT_TOOL_GET_OPTIONS (text_tool);
GimpDialogFactory *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;
}
dialog_factory = gimp_dialog_factory_get_singleton ();
if (tool->display)
{
GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (shell)));
}
if (text_tool->image)
gimp_image_get_resolution (text_tool->image, &xres, &yres);
text_tool->editor_dialog =
gimp_text_options_editor_new (parent, tool->tool_info->gimp, options,
gimp_dialog_factory_get_menu_factory (dialog_factory),
_("GIMP Text Editor"),
text_tool->proxy, text_tool->buffer,
xres, yres);
g_object_add_weak_pointer (G_OBJECT (text_tool->editor_dialog),
(gpointer) &text_tool->editor_dialog);
gimp_dialog_factory_add_foreign (dialog_factory,
"gimp-text-tool-dialog",
text_tool->editor_dialog);
g_signal_connect (text_tool->editor_dialog, "destroy",
G_CALLBACK (gimp_text_tool_editor_destroy),
text_tool);
gtk_widget_show (text_tool->editor_dialog);
}
static void
gimp_text_tool_editor_destroy (GtkWidget *dialog,
GimpTextTool *text_tool)
{
GimpTextOptions *options = GIMP_TEXT_TOOL_GET_OPTIONS (text_tool);
g_object_set (options,
"use-editor", FALSE,
NULL);
}
static void
gimp_text_tool_enter_text (GimpTextTool *text_tool,
const gchar *str)
{
GtkTextBuffer *buffer = GTK_TEXT_BUFFER (text_tool->buffer);
gboolean had_selection;
had_selection = gtk_text_buffer_get_has_selection (buffer);
gtk_text_buffer_begin_user_action (buffer);
gimp_text_tool_delete_selection (text_tool);
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))
gimp_text_tool_delete_from_cursor (text_tool, GTK_DELETE_CHARS, 1);
}
gimp_text_buffer_insert (text_tool->buffer, str);
gtk_text_buffer_end_user_action (buffer);
}
static void
gimp_text_tool_xy_to_iter (GimpTextTool *text_tool,
gdouble x,
gdouble y,
GtkTextIter *iter)
{
PangoLayout *layout;
gint offset_x;
gint offset_y;
gint index;
gint trailing;
gimp_text_tool_ensure_layout (text_tool);
gimp_text_layout_untransform_point (text_tool->layout, &x, &y);
gimp_text_layout_get_offsets (text_tool->layout, &offset_x, &offset_y);
x -= offset_x;
y -= offset_y;
layout = gimp_text_layout_get_pango_layout (text_tool->layout);
pango_layout_xy_to_index (layout,
x * PANGO_SCALE,
y * PANGO_SCALE,
&index, &trailing);
gimp_text_buffer_get_iter_at_index (text_tool->buffer, iter, index, TRUE);
if (trailing)
gtk_text_iter_forward_char (iter);
}
static void
gimp_text_tool_im_commit (GtkIMContext *context,
const gchar *str,
GimpTextTool *text_tool)
{
gimp_text_tool_enter_text (text_tool, str);
}
static void
gimp_text_tool_im_preedit_start (GtkIMContext *context,
GimpTextTool *text_tool)
{
GimpTool *tool = GIMP_TOOL (text_tool);
GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
GtkStyle *style = gtk_widget_get_style (shell->canvas);
GtkWidget *frame;
GtkWidget *ebox;
PangoRectangle cursor_rect = { 0, };
gint off_x, off_y;
if (text_tool->text)
gimp_text_tool_editor_get_cursor_rect (text_tool,
text_tool->overwrite_mode,
&cursor_rect);
g_object_get (text_tool, "x1", &off_x, "y1", &off_y, NULL);
text_tool->preedit_overlay = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (text_tool->preedit_overlay),
GTK_SHADOW_OUT);
gimp_display_shell_add_overlay (shell,
text_tool->preedit_overlay,
cursor_rect.x + off_x,
cursor_rect.y + off_y,
GIMP_HANDLE_ANCHOR_NORTH_WEST, 0, 0);
gimp_overlay_box_set_child_opacity (GIMP_OVERLAY_BOX (shell->canvas),
text_tool->preedit_overlay, 0.7);
gtk_widget_show (text_tool->preedit_overlay);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (text_tool->preedit_overlay), frame);
gtk_widget_show (frame);
ebox = gtk_event_box_new ();
gtk_widget_modify_bg (ebox, GTK_STATE_NORMAL,
&style->base[GTK_STATE_NORMAL]);
gtk_container_add (GTK_CONTAINER (frame), ebox);
gtk_widget_show (ebox);
text_tool->preedit_label = gtk_label_new (NULL);
gtk_widget_modify_bg (text_tool->preedit_label, GTK_STATE_NORMAL,
&style->text[GTK_STATE_NORMAL]);
gtk_misc_set_padding (GTK_MISC (text_tool->preedit_label), 2, 2);
gtk_container_add (GTK_CONTAINER (ebox), text_tool->preedit_label);
gtk_widget_show (text_tool->preedit_label);
}
static void
gimp_text_tool_im_preedit_end (GtkIMContext *context,
GimpTextTool *text_tool)
{
if (text_tool->preedit_overlay)
{
gtk_widget_destroy (text_tool->preedit_overlay);
text_tool->preedit_overlay = NULL;
text_tool->preedit_label = NULL;
}
}
static void
gimp_text_tool_im_preedit_changed (GtkIMContext *context,
GimpTextTool *text_tool)
{
if (text_tool->preedit_string)
g_free (text_tool->preedit_string);
gtk_im_context_get_preedit_string (context,
&text_tool->preedit_string, NULL,
&text_tool->preedit_cursor);
if (text_tool->preedit_label)
gtk_label_set_text (GTK_LABEL (text_tool->preedit_label),
text_tool->preedit_string);
}
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