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glyphedit.c
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glyphedit.c
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/*
* Copyright 2008 Department of Mathematical Sciences, New Mexico State University
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* DEPARTMENT OF MATHEMATICAL SCIENCES OR NEW MEXICO STATE UNIVERSITY BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "glyphedit.h"
#ifdef HAVE_XLIB
#include <gdk/gdkx.h>
#endif
#include <gdk/gdkkeysyms-compat.h>
#ifdef ENABLE_NLS
#include <libintl.h>
#define _(s) dgettext(GETTEXT_PACKAGE,s)
#else
#define _(s) (s)
#endif
/*
* Each pixel will be displayed by a square with this number of pixels
* on each side.
*/
#define MIN_PIXEL_SIZE 2
#define MAX_PIXEL_SIZE 20
#define DEFAULT_PIXEL_SIZE 10
#define HMARGINS(gw) ((gw)->hmargin << 1)
#define VMARGINS(gw) ((gw)->vmargin << 1)
/*
* Crosshair cursor.
*/
static const gchar *cross_xpm[] = {
"13 13 2 1",
" c None",
". c #000000",
" . ",
" . ",
" . ",
" . ",
" . ",
" ",
"..... .....",
" ",
" . ",
" . ",
" . ",
" . ",
" . "
};
/*
* Macros that represent the properties used by this type of object.
*/
#define GLYPHEDIT_CLIPBOARD gdk_atom_intern("GLYPHEDIT_CLIPBOARD", FALSE)
#define GLYPHEDIT_BDF_CHAR gdk_atom_intern("GLYPHEDIT_BDF_CHAR", FALSE)
#define GLYPHEDIT_BITMAP gdk_atom_intern("GLYPHEDIT_BITMAP", FALSE)
#define GLYPHEDIT_GLYPH gdk_atom_intern("GLYPHEDIT_GLYPH", FALSE)
/*
* Set default values.
*/
/*
* Enums used for identifying properties.
*/
enum {
PROP_0 = 0,
GLYPH_GRID,
BASELINE_COLOR,
SELECTION_COLOR,
CURSOR_COLOR,
PIXEL_SIZE,
SHOW_X_HEIGHT,
SHOW_CAP_HEIGHT,
COLOR_LIST,
OPERATION
};
/*
* The list of signals emitted by these objects.
*/
enum {
GLYPH_MODIFIED = 0,
POINTER_MOVED,
OPERATION_CHANGE,
COLOR_CHANGE
};
/**************************************************************************
*
* Local variables.
*
**************************************************************************/
static GtkWidgetClass *parent_class = 0;
static guint glyphedit_signals[COLOR_CHANGE + 1];
/**************************************************************************
*
* Class member functions.
*
**************************************************************************/
static void
glyphedit_set_property(GObject *obj, guint prop_id, const GValue *value,
GParamSpec *pspec)
{
GtkWidget *widget;
Glyphedit *gw;
widget = GTK_WIDGET(obj);
gw = GLYPHEDIT(obj);
switch (prop_id) {
case GLYPH_GRID:
glyphedit_set_grid(gw,
(bdf_glyph_grid_t *) g_value_get_pointer(value));
break;
case BASELINE_COLOR:
break;
case SELECTION_COLOR:
break;
case CURSOR_COLOR:
break;
case PIXEL_SIZE:
glyphedit_set_pixel_size(gw, g_value_get_uint(value));
break;
case SHOW_X_HEIGHT:
glyphedit_set_show_x_height(gw, g_value_get_boolean(value));
break;
case SHOW_CAP_HEIGHT:
glyphedit_set_show_cap_height(gw, g_value_get_boolean(value));
break;
case COLOR_LIST:
gw->colors = (guint16 *) g_value_get_pointer(value);
gtk_widget_queue_draw(widget);
break;
case OPERATION:
glyphedit_set_operation(gw,
(GlypheditOperation) g_value_get_uint(value));
break;
}
}
static void
glyphedit_get_property(GObject *obj, guint prop_id, GValue *value,
GParamSpec *pspec)
{
Glyphedit *gw;
gw = GLYPHEDIT(obj);
switch (prop_id) {
case GLYPH_GRID:
g_value_set_pointer(value, gw->grid);
break;
case BASELINE_COLOR:
break;
case SELECTION_COLOR:
break;
case CURSOR_COLOR:
break;
case PIXEL_SIZE:
g_value_set_uint(value, gw->pixel_size);
break;
case SHOW_X_HEIGHT:
g_value_set_boolean(value, gw->show_x_height);
break;
case SHOW_CAP_HEIGHT:
g_value_set_boolean(value, gw->show_cap_height);
break;
case COLOR_LIST:
g_value_set_pointer(value, gw->colors);
break;
case OPERATION:
g_value_set_uint(value, (guint) gw->op);
break;
}
}
static void
#if GTK_CHECK_VERSION(3, 0, 0)
glyphedit_destroy(GtkWidget *obj)
#else
glyphedit_destroy(GtkObject *obj)
#endif
{
Glyphedit *gw;
GlypheditClass *gwc;
/*
* Do some checks to make sure the incoming object exists and is the right
* kind.
*/
g_return_if_fail(obj != 0);
g_return_if_fail(IS_GLYPHEDIT(obj));
gw = GLYPHEDIT(obj);
gwc = GLYPHEDIT_GET_CLASS(obj);
/*
* Unreference objects used class-wide so they get deallocated properly
* when no longer used. The unreference only needs to happen the first
* time since the objects are created at class initialization time.
*/
if (gwc->cursor != 0)
#if GTK_CHECK_VERSION(3, 0, 0)
g_object_unref(gwc->cursor);
#else
gdk_cursor_unref(gwc->cursor);
#endif
gwc->cursor = 0;
/*
* Free up the grid info.
*/
if (gw->grid != 0) {
bdf_free_glyph_grid(gw->grid);
gw->grid = 0;
}
#if GTK_CHECK_VERSION(3, 0, 0)
GTK_WIDGET_CLASS(parent_class)->destroy(obj);
#else
GTK_OBJECT_CLASS(parent_class)->destroy(obj);
#endif
}
static void
glyphedit_finalize(GObject *obj)
{
/*
* Do some checks to make sure the incoming object exists and is the right
* kind.
*/
g_return_if_fail(obj != 0);
g_return_if_fail(IS_GLYPHEDIT(obj));
/*
* Follow the class chain back up to free up resources allocated in the
* parent classes.
*/
G_OBJECT_CLASS(parent_class)->finalize(obj);
}
static void
glyphedit_preferred_size(GtkWidget *widget, GtkRequisition *preferred)
{
Glyphedit *gw;
GdkScreen *screen;
guint16 dht, margin;
gw = GLYPHEDIT(widget);
screen = gdk_display_get_default_screen(gdk_display_get_default());
dht = gdk_screen_get_height(screen);
/*
* This little bit of code quietly forces the glyph grid to be
* at most 1/2 the height of the screen being used to help avoid taking
* up too much space on the desktop.
*/
margin = VMARGINS(gw);
preferred->height = margin +
((gw->pixel_size + 4) * gw->grid->grid_height);
if (preferred->height > (dht >> 1)) {
while (gw->pixel_size > 2) {
preferred->height = margin +
((gw->pixel_size + 4) * gw->grid->grid_height);
if (preferred->height < (dht >> 1))
break;
gw->pixel_size--;
}
}
preferred->width = HMARGINS(gw) +
((gw->pixel_size + 4) * gw->grid->grid_width);
}
#if GTK_CHECK_VERSION(3, 0, 0)
static void
glyphedit_get_preferred_width(GtkWidget *widget, gint *minimal_width, gint *natural_width)
{
GtkRequisition requisition;
glyphedit_preferred_size(widget, &requisition);
*minimal_width = *natural_width = requisition.width;
}
static void
glyphedit_get_preferred_height(GtkWidget *widget, gint *minimal_height, gint *natural_height)
{
GtkRequisition requisition;
glyphedit_preferred_size(widget, &requisition);
*minimal_height = *natural_height = requisition.height;
}
#endif
static void
glyphedit_actual_size(GtkWidget *widget, GtkAllocation *actual)
{
gtk_widget_set_allocation(widget, actual);
if (gtk_widget_get_realized(widget))
gdk_window_move_resize(gtk_widget_get_window(widget), actual->x, actual->y,
actual->width, actual->height);
}
static void
glyphedit_draw_pixel(Glyphedit *gw, gint16 x, gint16 y, gboolean sel)
{
GtkWidget *w = GTK_WIDGET(gw);
gint16 bpr, set, dx, dy, di, si;
guchar *masks, *bmap;
GdkRectangle pix;
GtkAllocation all;
if (!gtk_widget_get_realized(w) || gw->grid == 0)
return;
cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(w));
di = 0;
masks = 0;
switch (gw->grid->bpp) {
case 1: masks = bdf_onebpp; di = 7; break;
case 2: masks = bdf_twobpp; di = 3; break;
case 4: masks = bdf_fourbpp; di = 1; break;
case 8: masks = bdf_eightbpp; di = 0; break;
}
dx = (gw->pixel_size + 4) * gw->grid->grid_width;
dy = (gw->pixel_size + 4) * gw->grid->grid_height;
gtk_widget_get_allocation(&gw->widget, &all);
pix.x = (all.width >> 1) - (dx >> 1) +
((gw->pixel_size + 4) * x) + 2;
pix.y = (all.height >> 1) - (dy >> 1) +
((gw->pixel_size + 4) * y) + 2;
pix.width = pix.height = gw->pixel_size + 1;
if (sel == TRUE && gw->grid->sel.width != 0) {
bpr = ((gw->grid->sel.width * gw->grid->bpp) + 7) >> 3;
dy = y - gw->grid->sel.y;
dx = (x - gw->grid->sel.x) * gw->grid->bpp;
bmap = gw->grid->sel.bitmap;
} else {
bpr = ((gw->grid->grid_width * gw->grid->bpp) + 7) >> 3;
dy = y;
dx = x * gw->grid->bpp;
bmap = gw->grid->bitmap;
}
si = (dx & 7) / gw->grid->bpp;
set = bmap[(dy * bpr) + (dx >> 3)] & masks[si];
if (di > si)
set >>= (di - si) * gw->grid->bpp;
if (set) {
if (gw->grid->bpp > 1) {
gdouble color = 0;
switch (gw->grid->bpp) {
case 2:
color = gw->colors[set - 1] / 255.0;
break;
case 4:
color = gw->colors[set - 1 + 1] / 255.0;
break;
case 8:
color = set / 255.0;
break;
}
cairo_set_source_rgb(cr, color, color, color);
} else {
#if GTK_CHECK_VERSION(3, 0, 0)
GtkStyleContext *context = gtk_widget_get_style_context(GTK_WIDGET(gw));
gtk_style_context_get_color(context, GTK_STATE_FLAG_NORMAL, &gw->baselineColor);
gdk_cairo_set_source_rgba(cr, &gw->baselineColor);
#else
gdk_cairo_set_source_color(cr, &gw->baselineColor);
#endif
}
cairo_rectangle(cr, pix.x, pix.y, pix.width, pix.height);
cairo_fill(cr);
} else {
#if GTK_CHECK_VERSION(3, 0, 0)
GtkStyleContext *context = gtk_widget_get_style_context(w);
gtk_render_background(context, cr, pix.x, pix.y, pix.width, pix.height);
#else
GdkColor bg = gtk_widget_get_style(w)->bg[GTK_STATE_NORMAL];
gdk_cairo_set_source_color(cr, &bg);
cairo_rectangle(cr, pix.x, pix.y, pix.width, pix.height);
cairo_fill(cr);
#endif
}
#if GTK_CHECK_VERSION(3, 0, 0)
gdk_cairo_set_source_rgba(cr, &gw->selectionColor);
#else
gdk_cairo_set_source_color(cr, &gw->selectionColor);
#endif
if (sel == TRUE) {
cairo_rectangle(cr, pix.x + 1, pix.y + 1, pix.width - 2, pix.height - 2);
cairo_fill(cr);
}
cairo_destroy(cr);
}
static void
glyphedit_draw_glyph(Glyphedit *gw)
{
GtkWidget *w = GTK_WIDGET(gw);
gint16 x, y;
gboolean sel;
if (!gtk_widget_get_realized(w) || gw->grid == 0)
return;
for (y = 0; y < gw->grid->grid_height; y++) {
for (x = 0; x < gw->grid->grid_width; x++) {
sel = (bdf_in_selection(gw->grid, x, y, 0) ? TRUE : FALSE);
glyphedit_draw_pixel(gw, x, y, sel);
}
}
}
static void
glyphedit_draw_font_bbx(Glyphedit *gw)
{
GtkWidget *w = GTK_WIDGET(gw);
gint16 xoff, yoff, fxoff, fyoff, psize;
GdkRectangle frame;
GtkAllocation all;
if (!gtk_widget_get_realized(w))
return;
cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(w));
psize = gw->pixel_size + 4;
frame.width = psize * gw->grid->font_bbx.width;
frame.height = psize *
(gw->grid->font_bbx.ascent + gw->grid->font_bbx.descent);
fxoff = psize * gw->grid->grid_width;
fyoff = psize * gw->grid->grid_height;
gtk_widget_get_allocation(&gw->widget, &all);
frame.x = (all.width >> 1) - (fxoff >> 1);
frame.y = (all.height >> 1) - (fyoff >> 1);
if (gw->grid->font_bbx.x_offset < 0)
fxoff = psize * (gw->grid->base_x + gw->grid->font_bbx.x_offset);
else
fxoff = psize * gw->grid->base_x;
fyoff = psize * (gw->grid->base_y - gw->grid->font_bbx.ascent);
cairo_set_line_width(cr, 1.2);
cairo_rectangle(cr, frame.x + fxoff + 0.5, frame.y + fyoff + 0.5, frame.width, frame.height);
cairo_stroke(cr);
#if GTK_CHECK_VERSION(3, 0, 0)
gdk_cairo_set_source_rgba(cr, &gw->boundsColor);
#else
gdk_cairo_set_source_color(cr, &gw->boundsColor);
#endif
/*
* Draw vertical baseline.
*/
xoff = (gw->pixel_size + 4) * gw->grid->base_x;
yoff = (gw->pixel_size + 4) * gw->grid->base_y;
cairo_set_source_rgb(cr, 1.0, 0.0, 0.0);
cairo_move_to(cr, frame.x + xoff + 0.5, frame.y + fyoff + 0.5);
cairo_rel_line_to(cr, 0, frame.height);
/*
* Draw horizontal baseline.
*/
cairo_move_to(cr, frame.x + fxoff + 0.5, frame.y + yoff + 0.5);
cairo_rel_line_to(cr, frame.width, 0);
cairo_stroke(cr);
/*
* Draw the CAP_HEIGHT if indicated and exists.
*/
if (gw->grid && gw->grid->cap_height != 0) {
yoff = (gw->pixel_size + 4) *
(gw->grid->base_y - gw->grid->cap_height);
if (gw->show_cap_height == TRUE) {
#if GTK_CHECK_VERSION(3, 0, 0)
gdk_cairo_set_source_rgba(cr, &gw->boundsColor);
#else
gdk_cairo_set_source_color(cr, &gw->boundsColor);
#endif
} else {
#if GTK_CHECK_VERSION(3, 0, 0)
gdk_cairo_set_source_rgba(cr, &gw->baselineColor);
#else
gdk_cairo_set_source_color(cr, &gw->baselineColor);
#endif
}
cairo_move_to(cr, frame.x + fxoff + 0.5, frame.y + yoff + 0.5);
cairo_rel_line_to(cr, frame.width, 0);
cairo_stroke(cr);
}
/*
* Draw the X_HEIGHT if indicated and exists.
*/
if (gw->grid && gw->grid->x_height != 0) {
yoff = (gw->pixel_size + 4) * (gw->grid->base_y - gw->grid->x_height);
if (gw->show_x_height == TRUE)
#if GTK_CHECK_VERSION(3, 0, 0)
gdk_cairo_set_source_rgba(cr, &gw->boundsColor);
#else
gdk_cairo_set_source_color(cr, &gw->boundsColor);
#endif
else {
#if GTK_CHECK_VERSION(3, 0, 0)
gdk_cairo_set_source_rgba(cr, &gw->baselineColor);
#else
gdk_cairo_set_source_color(cr, &gw->baselineColor);
#endif
}
cairo_move_to(cr, frame.x + fxoff + 0.5, frame.y + yoff + 0.5);
cairo_rel_line_to(cr, frame.width, 0);
cairo_stroke(cr);
}
cairo_destroy(cr);
}
static gboolean
glyphedit_draw(GtkWidget *widget, cairo_t *cr)
{
Glyphedit *gw;
gint x, y, limit, unit, wd, ht;
GdkRectangle frame;
GtkAllocation all;
g_return_val_if_fail(widget != NULL, FALSE);
g_return_val_if_fail(IS_GLYPHEDIT(widget), FALSE);
gw = GLYPHEDIT(widget);
wd = gw->grid->grid_width;
ht = gw->grid->grid_height;
frame.width = (gw->pixel_size + 4) * wd;
frame.height = (gw->pixel_size + 4) * ht;
gtk_widget_get_allocation(widget, &all);
/*
* Adjust the frame horizontal and vertical positions so it
* always appears centered on the window.
*/
frame.x = (all.width >> 1) - (frame.width >> 1);
frame.y = (all.height >> 1) - (frame.height >> 1);
/*
* Limit the drawing area to the clip region.
*/
#if 0
double dash = 1.0;
cairo_set_dash(cr, &dash, 1, 0);
#endif
cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_width(cr, 1.0);
cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
/*
* Draw the outside frame.
*/
cairo_rectangle(cr, frame.x + 0.5, frame.y + 0.5, frame.width, frame.height);
/*
* Draw the vertical grid lines.
*/
limit = frame.x + frame.width;
unit = gw->pixel_size + 4;
for (x = frame.x + unit, y = frame.y; x < limit; x += unit) {
cairo_move_to(cr, x + 0.5, y + 0.5);
cairo_rel_line_to(cr, 0, frame.height);
}
/*
* Draw the horizontal grid lines.
*/
limit = frame.y + frame.height;
for (x = frame.x, y = frame.y + unit; y < limit; y += unit) {
cairo_move_to(cr, x + 0.5, y + 0.5);
cairo_rel_line_to(cr, frame.width, 0);
}
cairo_stroke(cr);
glyphedit_draw_font_bbx(gw);
glyphedit_draw_glyph(gw);
return FALSE;
}
static void
glyphedit_realize(GtkWidget *widget)
{
GlypheditClass *gwc;
GdkWindowAttr attributes;
gint attributes_mask;
GdkPixbuf *cb;
GtkAllocation all;
g_return_if_fail(widget != NULL);
g_return_if_fail(IS_GLYPHEDIT(widget));
gwc = GLYPHEDIT_GET_CLASS(widget);
gtk_widget_set_realized(widget, TRUE);
gtk_widget_get_allocation(widget, &all);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = all.x;
attributes.y = all.y;
attributes.width = all.width;
attributes.height = all.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual(widget);
attributes.event_mask = gtk_widget_get_events(widget);
attributes.event_mask |= (GDK_EXPOSURE_MASK|GDK_BUTTON_PRESS_MASK|
GDK_BUTTON_RELEASE_MASK|GDK_ENTER_NOTIFY_MASK|
GDK_POINTER_MOTION_MASK|
GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK|
GDK_LEAVE_NOTIFY_MASK|GDK_FOCUS_CHANGE_MASK|
GDK_PROPERTY_CHANGE_MASK);
attributes_mask = GDK_WA_X|GDK_WA_Y|GDK_WA_VISUAL;
gtk_widget_set_window(widget, gdk_window_new(gtk_widget_get_parent_window(widget),
&attributes, attributes_mask));
gdk_window_set_user_data(gtk_widget_get_window(widget), widget);
gtk_widget_set_style(widget, gtk_style_attach(gtk_widget_get_style(widget), gtk_widget_get_window(widget)));
gtk_style_set_background(gtk_widget_get_style(widget), gtk_widget_get_window(widget), GTK_STATE_NORMAL);
/*
* Create the crosshair cursor.
*/
if (gwc->cursor == 0) {
gwc = GLYPHEDIT_GET_CLASS(widget);
cb = gdk_pixbuf_new_from_xpm_data(cross_xpm);
gwc->cursor = gdk_cursor_new_from_pixbuf(gdk_display_get_default(),
cb, 7, 7);
g_object_unref(G_OBJECT(cb));
}
gdk_window_set_cursor(gtk_widget_get_window(widget), gwc->cursor);
}
#if !GTK_CHECK_VERSION(3, 0, 0)
static gboolean
glyphedit_expose(GtkWidget *widget, GdkEventExpose *event)
{
GtkAllocation all;
gtk_widget_get_allocation(widget, &all);
/*
* Paint the shadow first.
*/
if (gtk_widget_is_drawable(widget))
gtk_paint_shadow(gtk_widget_get_style(widget), gtk_widget_get_window(widget),
gtk_widget_get_state(widget), GTK_SHADOW_OUT,
&event->area, widget, "glyphedit",
0, 0,
all.width,
all.height);
cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(widget));
glyphedit_draw(widget, cr);
cairo_destroy(cr);
return FALSE;
}
#endif
static gint
glyphedit_focus_out(GtkWidget *widget, GdkEventFocus *event)
{
g_return_val_if_fail(widget != NULL, FALSE);
g_return_val_if_fail(IS_GLYPHEDIT(widget), FALSE);
g_return_val_if_fail(event != NULL, FALSE);
GLYPHEDIT(widget)->mouse_down = FALSE;
return FALSE;
}
/**************************************************************************
*
* Class and object initialization routines.
*
**************************************************************************/
static GType
glyphedit_get_operation_type(void)
{
static GType etype = 0;
if (etype == 0) {
static const GEnumValue values[] = {
{GLYPHEDIT_NONE, "GLYPHEDIT_NONE", "none"},
{GLYPHEDIT_SELECT, "GLYPHEDIT_SELECT", "select"},
{GLYPHEDIT_DRAW, "GLYPHEDIT_DRAW", "draw"},
{GLYPHEDIT_MOVE, "GLYPHEDIT_MOVE", "move"},
{GLYPHEDIT_COPY, "GLYPHEDIT_COPY", "copy"},
{GLYPHEDIT_FLIP_HORIZONTAL,
"GLYPHEDIT_FLIP_HORIZONTAL",
"flip-horizontal"},
{GLYPHEDIT_FLIP_VERTICAL,
"GLYPHEDIT_FLIP_VERTICAL",
"flip-verticalal"},
{GLYPHEDIT_SHEAR, "GLYPHEDIT_SHEAR", "shear"},
{GLYPHEDIT_ROTATE_LEFT,
"GLYPHEDIT_ROTATE_LEFT",
"rotate-left"},
{GLYPHEDIT_ROTATE_RIGHT,
"GLYPHEDIT_ROTATE_RIGHT",
"rotate-right"},
{GLYPHEDIT_ROTATE,
"GLYPHEDIT_ROTATE",
"rotate"},
{GLYPHEDIT_SHIFT_UP_LEFT,
"GLYPHEDIT_SHIFT_UP_LEFT",
"shift-up-left"},
{GLYPHEDIT_SHIFT_UP,
"GLYPHEDIT_SHIFT_UP",
"shift-up"},
{GLYPHEDIT_SHIFT_UP_RIGHT,
"GLYPHEDIT_SHIFT_UP_RIGHT",
"shift-up-right"},
{GLYPHEDIT_SHIFT_LEFT,
"GLYPHEDIT_SHIFT_LEFT",
"shift-left"},
{GLYPHEDIT_SHIFT_RIGHT,
"GLYPHEDIT_SHIFT_RIGHT",
"shift-right"},
{GLYPHEDIT_SHIFT_DOWN_LEFT,
"GLYPHEDIT_SHIFT_DOWN_LEFT",
"shift-down-left"},
{GLYPHEDIT_SHIFT_DOWN,
"GLYPHEDIT_SHIFT_DOWN",
"shift-down"},
{GLYPHEDIT_SHIFT_DOWN_RIGHT,
"GLYPHEDIT_SHIFT_DOWN_RIGHT",
"shift-down-right"},
{0, 0, 0}
};
etype = g_enum_register_static("GlypheditOperation", values);
}
return etype;
}
static void
glyphedit_init(GTypeInstance *obj, gpointer g_class)
{
Glyphedit *gw = GLYPHEDIT(obj);
gint fwidth, fpad;
gw->default_pixel_size = gw->pixel_size = DEFAULT_PIXEL_SIZE;
gw->owns_clipboard = FALSE;
gw->grid = 0;
gw->last_x = gw->last_y = 0;
memset((char *) &gw->sel_start, 0, sizeof(GdkPoint));
memset((char *) &gw->sel_end, 0, sizeof(GdkPoint));
/*
* Always initialize to the first color.
*/
gw->cidx = 1;
/*
* Initialize the last color seen.
*/
gw->lcolor = 0;
gtk_widget_style_get(GTK_WIDGET(gw),
"focus-line-width", &fwidth,
"focus-padding", &fpad,
NULL);
#if GTK_CHECK_VERSION(3, 0, 0)
/* TODO: for some reason the same code as below doesn't work in _init() */
GtkStyleContext *context = gtk_widget_get_style_context(GTK_WIDGET(gw));
gtk_style_context_get_color(context, GTK_STATE_FLAG_NORMAL, &gw->baselineColor);
gtk_style_context_get_background_color(context, GTK_STATE_FLAG_SELECTED, &gw->selectionColor);
gdk_rgba_parse(&gw->boundsColor, "#ff0000");
#else
gw->baselineColor = gtk_widget_get_style(GTK_WIDGET(gw))->fg[GTK_STATE_NORMAL];
gw->selectionColor = gtk_widget_get_style(GTK_WIDGET(gw))->bg[GTK_STATE_SELECTED];
gdk_color_parse("#ff0000", &gw->boundsColor);
#endif
/*
* Padding that will appear before and after the focus rectangle.
* Hardcode this for now.
*/
gw->border = 4;
gw->hmargin = gtk_widget_get_style(&gw->widget)->xthickness + fwidth + fpad + gw->border;
gw->vmargin = gtk_widget_get_style(&gw->widget)->ythickness + fwidth + fpad + gw->border;
gw->op = GLYPHEDIT_DRAW;
}
/*
* A convenience function for calling the GLYPH_MODIFIED signal because
* so many functions depend on it.
*/
static void
glyphedit_signal_glyph_change(Glyphedit *gw)
{
bdf_bitmap_t image;
bdf_metrics_t metrics;
GlypheditSignalInfo si;
if (gw->grid == 0)
return;
glyphedit_get_glyph_metrics(gw, &metrics);
bdf_grid_image(gw->grid, &image);
si.reason = GLYPHEDIT_GLYPH_MODIFIED;
si.metrics = &metrics;
si.image = ℑ
si.color = gw->cidx;
g_signal_emit(G_OBJECT(gw), glyphedit_signals[GLYPH_MODIFIED], 0, &si);
if (image.bytes > 0)
free(image.bitmap);
gtk_widget_queue_draw(GTK_WIDGET(gw));
}
/**************************************************************************
*
* API functions.
*
**************************************************************************/
GtkWidget *
glyphedit_new(const gchar *prop1, ...)
{
GtkWidget *w;
va_list var_args;
va_start(var_args, prop1);
w = GTK_WIDGET(g_object_new_valist(glyphedit_get_type(), prop1, var_args));
va_end(var_args);
return w;
}
GtkWidget *
glyphedit_newv(bdf_glyph_grid_t *grid, guint16 default_pixel_size,
gboolean show_x_height, gboolean show_cap_height,
guint16 *colors)
{
Glyphedit *ge = g_object_new(glyphedit_get_type(),
"glyphGrid", grid,
"pixelSize", default_pixel_size,
"showXHeight", show_x_height,
"showCapHeight", show_cap_height,
"colorList", colors,
NULL);
return GTK_WIDGET(ge);
}
gint32
glyphedit_get_encoding(Glyphedit *gw)
{
g_return_val_if_fail(gw != NULL, -1);
g_return_val_if_fail(IS_GLYPHEDIT(gw), -1);
return (gw->grid) ? gw->grid->encoding : -1;
}
void
glyphedit_get_glyph_metrics(Glyphedit *gw, bdf_metrics_t *metrics)
{
g_return_if_fail(gw != NULL);
g_return_if_fail(metrics != NULL);
g_return_if_fail(IS_GLYPHEDIT(gw));
if (!gw->grid)
memset(metrics, 0, sizeof(bdf_metrics_t));
else {
metrics->font_spacing = gw->grid->spacing;
metrics->swidth = gw->grid->swidth;
metrics->dwidth = gw->grid->dwidth;
metrics->width = gw->grid->glyph_bbx.width;
metrics->height = gw->grid->glyph_bbx.height;
metrics->x_offset = gw->grid->glyph_bbx.x_offset;
metrics->y_offset = gw->grid->glyph_bbx.y_offset;
metrics->ascent = gw->grid->glyph_bbx.ascent;
metrics->descent = gw->grid->glyph_bbx.descent;
}
}
void
glyphedit_get_font_metrics(Glyphedit *gw, bdf_metrics_t *metrics)
{
g_return_if_fail(gw != NULL);
g_return_if_fail(metrics != NULL);
g_return_if_fail(IS_GLYPHEDIT(gw));
if (!gw->grid)
memset(metrics, 0, sizeof(bdf_metrics_t));
else {
metrics->font_spacing = gw->grid->spacing;
metrics->swidth = gw->grid->swidth;
metrics->dwidth = gw->grid->dwidth;
metrics->width = gw->grid->font_bbx.width;
metrics->height = gw->grid->font_bbx.height;
metrics->x_offset = gw->grid->font_bbx.x_offset;
metrics->y_offset = gw->grid->font_bbx.y_offset;
metrics->ascent = gw->grid->font_bbx.ascent;
metrics->descent = gw->grid->font_bbx.descent;
}
}
bdf_psf_unimap_t *
glyphedit_get_psf_mappings(Glyphedit *gw)
{
g_return_val_if_fail(gw != NULL, 0);
g_return_val_if_fail(IS_GLYPHEDIT(gw), 0);
return (gw->grid) ? &gw->grid->unicode : 0;
}
/*
* Can set both font and glyph metrics.
*/
void
glyphedit_set_metrics(Glyphedit *gw, bdf_metrics_t *metrics)
{
GtkWidget *w = GTK_WIDGET(gw);
g_return_if_fail(gw != NULL);
g_return_if_fail(metrics != NULL);
g_return_if_fail(IS_GLYPHEDIT(gw));
if (gw->grid == 0)
return;
if (bdf_grid_resize(gw->grid, metrics)) {
glyphedit_signal_glyph_change(gw);
gtk_widget_queue_resize(GTK_WIDGET(gw));
} else if (gtk_widget_get_realized(w))
/*
* The size didn't change, but we need to redraw if the widget
* has been realized.
*/
gtk_widget_queue_draw(GTK_WIDGET(gw));
}