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/*
* Some convenience stuff
*
* Authors:
* Lauris Kaplinski <lauris@kaplinski.com>
* Jasper van de Gronde <th.v.d.gronde@hccnet.nl>
* Jon A. Cruz <jon@joncruz.org>
* Kris De Gussem <Kris.DeGussem@gmail.com>
*
* Copyright (C) 1999-2002 authors
* Copyright (C) 2001-2002 Ximian, Inc.
* Copyright (C) 2010 Jasper van de Gronde
* Copyright (C) 2010 Jon A. Cruz
* Copyright (C) 2012 Kris De Gussem
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <cstring>
#include <map>
#include <sstream>
#include "color.h"
#include "sp-cursor.h"
void sp_cursor_bitmap_and_mask_from_xpm(GdkBitmap **bitmap, GdkBitmap **mask, gchar const *const *xpm)
{
int height = 0;
int width = 0;
int colors = 0;
int pix = 0;
std::stringstream ss;
ss << xpm[0];
ss >> height;
ss >> width;
ss >> colors;
ss >> pix;
g_return_if_fail(height == 32);
g_return_if_fail(width == 32);
g_return_if_fail(colors >= 3);
int transparent_color = ' ';
std::string black_colors;
char pixmap_buffer[(32 * 32) / 8] = {0};
char mask_buffer[(32 * 32) / 8] = {0};
for (int i = 0; i < colors; i++) {
char const *p = xpm[1 + i];
char const ccode = *p;
p++;
while (isspace(*p)) {
p++;
}
p++;
while (isspace(*p)) {
p++;
}
if (strcmp(p, "None") == 0) {
transparent_color = ccode;
}
if (strcmp(p, "Stroke") == 0) {
black_colors.push_back(ccode);
}
if (strcmp(p, "#000000") == 0) {
black_colors.push_back(ccode);
}
}
for (int y = 0; y < 32; y++) {
for (int x = 0; x < 32; ) {
char value = 0;
char maskv = 0;
for (int pix = 0; pix < 8; pix++, x++){
if (xpm[1 + colors + y][x] != transparent_color) {
maskv |= 1 << pix;
if (black_colors.find(xpm[1 + colors + y][x]) != std::string::npos) {
value |= 1 << pix;
}
}
}
pixmap_buffer[(y * 4 + x / 8) - 1] = value;
mask_buffer[(y * 4 + x / 8) - 1] = maskv;
}
}
*bitmap = gdk_bitmap_create_from_data(NULL, pixmap_buffer, 32, 32);
*mask = gdk_bitmap_create_from_data(NULL, mask_buffer, 32, 32);
}
static void free_cursor_data(guchar *pixels, gpointer /*data*/) {
delete [] reinterpret_cast<guint32*>(pixels);
}
struct RGBA {
guchar v[4];
RGBA() {
v[0] = 0;
v[1] = 0;
v[2] = 0;
v[3] = 0;
}
RGBA(guchar r, guchar g, guchar b, guchar a) {
v[0] = r;
v[1] = g;
v[2] = b;
v[3] = a;
}
operator guint32() const {
guint32 result = (static_cast<guint32>(v[0]) << 0)
| (static_cast<guint32>(v[1]) << 8)
| (static_cast<guint32>(v[2]) << 16)
| (static_cast<guint32>(v[3]) << 24);
return result;
}
};
GdkPixbuf *sp_cursor_pixbuf_from_xpm(gchar const *const *xpm, GdkColor const& black, GdkColor const& white, guint32 fill, guint32 stroke)
{
int height = 0;
int width = 0;
int colors = 0;
int pix = 0;
std::stringstream ss (std::stringstream::in | std::stringstream::out);
ss << xpm[0];
ss >> height;
ss >> width;
ss >> colors;
ss >> pix;
std::map<char, RGBA> colorMap;
for (int i = 0; i < colors; i++) {
char const *p = xpm[1 + i];
char const ccode = *p;
p++;
while (isspace(*p)) {
p++;
}
p++;
while (isspace(*p)) {
p++;
}
if (strcmp(p, "None") == 0) {
colorMap[ccode] = RGBA();
} else if (strcmp(p, "Fill") == 0) {
colorMap[ccode] = RGBA(SP_RGBA32_R_U(fill), SP_RGBA32_G_U(fill), SP_RGBA32_B_U(fill), SP_RGBA32_A_U(fill));
} else if (strcmp(p, "Stroke") == 0) {
colorMap[ccode] = RGBA(SP_RGBA32_R_U(stroke), SP_RGBA32_G_U(stroke), SP_RGBA32_B_U(stroke), SP_RGBA32_A_U(stroke));
} else if (strcmp(p, "#000000") == 0) {
colorMap[ccode] = RGBA(black.red, black.green, black.blue, 255);
} else if (strcmp(p, "#FFFFFF") == 0) {
colorMap[ccode] = RGBA(white.red, white.green, white.blue, 255);
} else {
colorMap[ccode] = RGBA();
}
}
guint32 *pixmap_buffer = new guint32[width * height];
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
std::map<char, RGBA>::const_iterator it = colorMap.find(xpm[1 + colors + y][x]);
pixmap_buffer[y * width + x] = (it == colorMap.end()) ? 0u : it->second;
}
}
return gdk_pixbuf_new_from_data(reinterpret_cast<guchar*>(pixmap_buffer), GDK_COLORSPACE_RGB, TRUE, 8, width, height, width * sizeof(guint32), free_cursor_data, NULL);
}
GdkCursor *sp_cursor_new_from_xpm(gchar const *const *xpm, gint hot_x, gint hot_y)
{
GdkCursor *cursor = 0;
GdkColor const fg = { 0, 0, 0, 0 };
GdkColor const bg = { 0, 65535, 65535, 65535 };
GdkBitmap *bitmap = 0;
GdkBitmap *mask = 0;
sp_cursor_bitmap_and_mask_from_xpm(&bitmap, &mask, xpm);
if ( bitmap && mask ) {
cursor = gdk_cursor_new_from_pixmap(bitmap, mask,
&fg, &bg,
hot_x, hot_y);
g_object_unref(bitmap);
g_object_unref(mask);
}
return cursor;
}
/*
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 :
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