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// SPDX-License-Identifier: GPL-2.0-or-later
/** @file
* Entry widget for typing color value in css form
*//*
* Authors:
* Tomasz Boczkowski <penginsbacon@gmail.com>
*
* Copyright (C) 2014 Authors
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <glibmm.h>
#include <glibmm/i18n.h>
#include <iomanip>
#include "color-entry.h"
namespace Inkscape {
namespace UI {
namespace Widget {
ColorEntry::ColorEntry(SelectedColor &color)
: _color(color)
, _updating(false)
, _updatingrgba(false)
, _prevpos(0)
, _lastcolor(0)
{
_color_changed_connection = color.signal_changed.connect(sigc::mem_fun(this, &ColorEntry::_onColorChanged));
_color_dragged_connection = color.signal_dragged.connect(sigc::mem_fun(this, &ColorEntry::_onColorChanged));
signal_activate().connect(sigc::mem_fun(this, &ColorEntry::_onColorChanged));
get_buffer()->signal_inserted_text().connect(sigc::mem_fun(this, &ColorEntry::_inputCheck));
_onColorChanged();
// add extra character for pasting a hash, '#11223344'
set_max_length(9);
set_width_chars(8);
set_tooltip_text(_("Hexadecimal RGBA value of the color"));
}
ColorEntry::~ColorEntry()
{
_color_changed_connection.disconnect();
_color_dragged_connection.disconnect();
}
void ColorEntry::_inputCheck(guint pos, const gchar * /*chars*/, guint n_chars)
{
// remember position of last character, so we can remove it.
// we only overflow by 1 character at most.
_prevpos = pos + n_chars - 1;
}
void ColorEntry::on_changed()
{
if (_updating) {
return;
}
if (_updatingrgba) {
return; // Typing text into entry box
}
Glib::ustring text = get_text();
bool changed = false;
// Coerce the value format to hexadecimal
for (auto it = text.begin(); it != text.end(); /*++it*/) {
if (!g_ascii_isxdigit(*it)) {
text.erase(it);
changed = true;
} else {
++it;
}
}
if (text.size() > 8) {
text.erase(_prevpos, 1);
changed = true;
}
// autofill rules
gchar *str = g_strdup(text.c_str());
gchar *end = nullptr;
guint64 rgba = g_ascii_strtoull(str, &end, 16);
ptrdiff_t len = end - str;
if (len < 8) {
if (len == 0) {
rgba = _lastcolor;
} else if (len <= 2) {
if (len == 1) {
rgba *= 17;
}
rgba = (rgba << 24) + (rgba << 16) + (rgba << 8);
} else if (len <= 4) {
// display as rrggbbaa
rgba = rgba << (4 * (4 - len));
guint64 r = rgba & 0xf000;
guint64 g = rgba & 0x0f00;
guint64 b = rgba & 0x00f0;
guint64 a = rgba & 0x000f;
rgba = 17 * ((r << 12) + (g << 8) + (b << 4) + a);
} else {
rgba = rgba << (4 * (8 - len));
}
if (len == 7) {
rgba = (rgba & 0xfffffff0) + (_lastcolor & 0x00f);
} else if (len == 5) {
rgba = (rgba & 0xfffff000) + (_lastcolor & 0xfff);
} else if (len != 4 && len != 8) {
rgba = (rgba & 0xffffff00) + (_lastcolor & 0x0ff);
}
}
_updatingrgba = true;
if (changed) {
set_text(str);
}
SPColor color(rgba);
_color.setColorAlpha(color, SP_RGBA32_A_F(rgba));
_updatingrgba = false;
g_free(str);
}
void ColorEntry::_onColorChanged()
{
if (_updatingrgba) {
return;
}
SPColor color = _color.color();
gdouble alpha = _color.alpha();
_lastcolor = color.toRGBA32(alpha);
Glib::ustring text = Glib::ustring::format(std::hex, std::setw(8), std::setfill(L'0'), _lastcolor);
Glib::ustring old_text = get_text();
if (old_text != text) {
_updating = true;
set_text(text);
_updating = false;
}
}
}
}
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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