Added colour option to blackandwhite and threshold magic tools. Since the blackandwhite tool is now the same as tint(with the exception that bandw handles tinting black in a better way) the blackandwhite tool was merged into tint.c and blackandwhite.c removed
This commit is contained in:
Andrew Corcoran
parent
c54d6b31a7
commit
b2e2289622
6 changed files with 157 additions and 364 deletions
240
magic/src/tint.c
240
magic/src/tint.c
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@ -1,9 +1,11 @@
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/*
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tint.c
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Tint Magic Tool Plugin
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tint, Tin the image into one colour or threshold it into pure colour and white
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Tux Paint - A simple drawing program for children.
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Credits: Andrew Corcoran <akanewbie@gmail.com>
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Copyright (c) 2002-2008 by Bill Kendrick and others; see AUTHORS.txt
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bill@newbreedsoftware.com
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http://www.tuxpaint.org/
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@ -23,113 +25,148 @@
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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(See COPYING.txt)
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Last updated: July 9, 2008
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Last updated: July 8, 2008
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$Id$
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*/
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#include <stdio.h>
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#include <string.h>
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#include <libintl.h>
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#include "tp_magic_api.h"
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#include "SDL_image.h"
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#include "SDL_mixer.h"
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#include <math.h>
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#include <limits.h>
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#ifndef gettext_noop
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#define gettext_noop(String) String
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#endif
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/* Our globals: */
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static Mix_Chunk * tint_snd;
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enum {
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TOOL_TINT,
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TOOL_THRESHOLD,
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tint_NUM_TOOLS
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};
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static Uint8 tint_r, tint_g, tint_b;
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static int tint_min = INT_MAX;
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static int tint_max = 0;
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static const int tint_RADIUS =16;
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// No setup required:
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int tint_init(magic_api * api)
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{
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char fname[1024];
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static Mix_Chunk * tint_snd_effect[tint_NUM_TOOLS];
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snprintf(fname, sizeof(fname), "%s/sounds/magic/tint.wav",
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api->data_directory);
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tint_snd = Mix_LoadWAV(fname);
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return(1);
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}
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const char * tint_snd_filenames[tint_NUM_TOOLS] = {
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"tint.wav",
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"flip.wav"
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};
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const char * tint_icon_filenames[tint_NUM_TOOLS] = {
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"tint.png",
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"flip.png"
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};
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const char * tint_names[tint_NUM_TOOLS] = {
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gettext_noop("Tint"),
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gettext_noop("Threshold")
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};
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const char * tint_descs[tint_NUM_TOOLS][2] = {
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{gettext_noop("Click and move the mouse around to change the color of parts of the picture."),
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gettext_noop("Click to change the entire picture’s color."),},
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{gettext_noop("Click and move the mouse around to threshold the image into pure colour and white regions."),
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gettext_noop("Click to threshold the image into pure colour and white regions.")}
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};
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Uint32 tint_api_version(void) { return(TP_MAGIC_API_VERSION); }
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// We have multiple tools:
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int tint_get_tool_count(magic_api * api)
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{
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//Load sounds
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int tint_init(magic_api * api){
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int i;
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char fname[1024];
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for (i = 0; i < tint_NUM_TOOLS; i++){
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snprintf(fname, sizeof(fname), "%s/sounds/magic/%s", api->data_directory, tint_snd_filenames[i]);
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tint_snd_effect[i] = Mix_LoadWAV(fname);
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}
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return(1);
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}
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int tint_get_tool_count(magic_api * api){
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return(tint_NUM_TOOLS);
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}
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// Load our icons:
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SDL_Surface * tint_get_icon(magic_api * api, int which)
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{
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SDL_Surface * tint_get_icon(magic_api * api, int which){
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char fname[1024];
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snprintf(fname, sizeof(fname), "%s/images/magic/tint.png",
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api->data_directory);
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snprintf(fname, sizeof(fname), "%simages/magic/%s", api->data_directory, tint_icon_filenames[which]);
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return(IMG_Load(fname));
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}
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// Return our names, localized:
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char * tint_get_name(magic_api * api, int which)
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{
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return(strdup(gettext_noop("Tint")));
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char * tint_get_name(magic_api * api, int which){
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return(strdup(gettext(tint_names[which])));
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}
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// Return our descriptions, localized:
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char * tint_get_description(magic_api * api, int which, int mode)
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{
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if (mode == MODE_PAINT)
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return(strdup(gettext_noop("Click and move the mouse around to change the color of parts of the picture.")));
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else
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return(strdup(gettext_noop("Click to change the entire picture’s color.")));
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char * tint_get_description(magic_api * api, int which, int mode){
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return(strdup(gettext(tint_descs[which][mode-1])));
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}
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//Calculates the grey scale value for a rgb pixel
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static int tint_grey(Uint8 r1,Uint8 g1,Uint8 b1){
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return 0.3*r1+.59*g1+0.11*b1;
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}
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static void do_tint_pixel(void * ptr, int which,
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SDL_Surface * canvas, SDL_Surface * last,
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int x, int y){
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magic_api * api = (magic_api *) ptr;
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Uint8 r,g,b;
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float h,s,v;
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SDL_GetRGB(api->getpixel(last, x, y), last->format, &r, &g, &b);
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{
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int greyValue = tint_grey(r,g,b);
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if (which == TOOL_TINT){
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api->rgbtohsv(tint_r, tint_g, tint_b, &h, &s, &v);
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api->hsvtorgb(h, s, greyValue/255.0, &r, &g, &b);
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api->putpixel(canvas, x, y, SDL_MapRGB(canvas->format, r, g, b));
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}else if (which == TOOL_THRESHOLD){
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int thresholdValue = (tint_max-tint_min)/2;
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if (greyValue < thresholdValue){
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api->putpixel(canvas, x, y, SDL_MapRGB(canvas->format, tint_r, tint_g, tint_b));
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}else{
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api->putpixel(canvas, x, y, SDL_MapRGB(canvas->format, 255, 255, 255));
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}
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}
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}
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}
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// Do the effect:
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static void do_tint_full(void * ptr,SDL_Surface * canvas, SDL_Surface * last, int which){
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static void do_tint(void * ptr, SDL_Surface * canvas, SDL_Surface * last,
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int x, int y)
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{
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magic_api * api = (magic_api *) ptr;
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double rd = api->sRGB_to_linear(tint_r);
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double gd = api->sRGB_to_linear(tint_g);
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double bd = api->sRGB_to_linear(tint_b);
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double old;
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Uint8 r, g, b;
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magic_api * api = (magic_api *) ptr;
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/* Get original pixel: */
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SDL_GetRGB(api->getpixel(last, x, y), last->format, &r, &g, &b);
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old = api->sRGB_to_linear(r) * 0.2126 +
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api->sRGB_to_linear(g) * 0.7152 +
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api->sRGB_to_linear(b) * 0.0722;
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api->putpixel(canvas, x, y,
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SDL_MapRGB(canvas->format,
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api->linear_to_sRGB(rd * old),
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api->linear_to_sRGB(gd * old),
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api->linear_to_sRGB(bd * old)));
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int x,y;
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for (y = 0; y < last->h; y++){
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for (x=0; x < last->w; x++){
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do_tint_pixel(ptr, which, canvas, last, x, y);
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}
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}
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}
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static void do_tint_paint(void * ptr, int which, SDL_Surface * canvas, SDL_Surface * last,
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int x, int y)
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{
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magic_api * api = (magic_api *) ptr;
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static void do_tint_brush(void * ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y){
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int xx, yy;
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magic_api * api = (magic_api *) ptr;
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for (yy = y - 16; yy < y + 16; yy++)
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for (yy = y - tint_RADIUS; yy < y + tint_RADIUS; yy++)
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{
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for (xx = x - 16; xx < x + 16; xx++)
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for (xx = x - tint_RADIUS; xx < x + tint_RADIUS; xx++)
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{
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if (api->in_circle(xx - x, yy - y, 16))
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if (api->in_circle(xx - x, yy - y, tint_RADIUS) &&
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!api->touched(xx, yy))
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{
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if (!api->touched(xx, yy))
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{
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do_tint(ptr, canvas, last, xx, yy);
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}
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do_tint_pixel(api, which, canvas, last, xx, yy);
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}
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}
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}
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@ -138,56 +175,54 @@ static void do_tint_paint(void * ptr, int which, SDL_Surface * canvas, SDL_Surfa
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// Affect the canvas on drag:
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void tint_drag(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * last, int ox, int oy, int x, int y,
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SDL_Rect * update_rect)
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{
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api->line((void *) api, which, canvas, last, ox, oy, x, y, 1, do_tint_paint);
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SDL_Rect * update_rect){
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api->line((void *) api, which, canvas, last, ox, oy, x, y, 1, do_tint_brush);
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api->playsound(tint_snd_effect[which], (x * 255) / canvas->w, 255);
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if (ox > x) { int tmp = ox; ox = x; x = tmp; }
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if (oy > y) { int tmp = oy; oy = y; y = tmp; }
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update_rect->x = ox - 16;
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update_rect->y = oy - 16;
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update_rect->w = (x + 16) - update_rect->x;
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update_rect->h = (y + 16) - update_rect->y;
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api->playsound(tint_snd, (x * 255) / canvas->w, 255);
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update_rect->x = ox - tint_RADIUS;
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update_rect->y = oy - tint_RADIUS;
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update_rect->w = (x + tint_RADIUS) - update_rect->x;
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update_rect->h = (y + tint_RADIUS) - update_rect->y;
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}
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// Affect the canvas on click:
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void tint_click(magic_api * api, int which, int mode,
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SDL_Surface * canvas, SDL_Surface * last,
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int x, int y, SDL_Rect * update_rect)
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{
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int x, int y, SDL_Rect * update_rect){
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if (mode == MODE_PAINT)
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tint_drag(api, which, canvas, last, x, y, x, y, update_rect);
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else
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{
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int xx, yy;
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for (yy = 0; yy < canvas->h; yy++)
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for (xx = 0; xx < canvas->w; xx++)
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do_tint(api, canvas, last, xx, yy);
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else{
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update_rect->x = 0;
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update_rect->y = 0;
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update_rect->w = canvas->w;
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update_rect->h = canvas->h;
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/* FIXME: Play sfx */
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do_tint_full(api, canvas, last, which);
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api->playsound(tint_snd_effect[which], 128, 255);
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}
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}
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// Affect the canvas on release:
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void tint_release(magic_api * api, int which,
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SDL_Surface * canvas, SDL_Surface * last,
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int x, int y, SDL_Rect * update_rect)
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{
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}
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// No setup happened:
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void tint_shutdown(magic_api * api)
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{
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if (tint_snd != NULL)
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Mix_FreeChunk(tint_snd);
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//Clean up sounds
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int i;
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for(i=0; i<tint_NUM_TOOLS; i++){
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if(tint_snd_effect[i] != NULL){
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Mix_FreeChunk(tint_snd_effect[i]);
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}
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}
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}
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// Record the color from Tux Paint:
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@ -204,8 +239,25 @@ int tint_requires_colors(magic_api * api, int which)
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return 1;
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}
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void tint_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas)
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{
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void tint_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas){
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int x,y;
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Uint8 r1,g1,b1;
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for (y = 0; y < canvas->h; y++){
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for (x=0; x < canvas->w; x++){
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SDL_GetRGB(api->getpixel(canvas, x, y), canvas->format, &r1, &g1, &b1);
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{
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int greyValue = tint_grey(r1,g1,b1);
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if (greyValue<tint_min){
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tint_min=greyValue;
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}
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if (greyValue>tint_max){
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tint_max=greyValue;
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}
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}
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}
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}
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}
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void tint_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas)
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@ -214,5 +266,5 @@ void tint_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas)
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int tint_modes(magic_api * api, int which)
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{
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return(MODE_PAINT | MODE_FULLSCREEN);
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return(MODE_FULLSCREEN|MODE_PAINT);
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}
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