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Color mixer working okay now!

Browse source 
I'd like to add undo/redo, and the trash button needs a label,
but it's usable!
This commit is contained in:
Bill Kendrick 2022-01-27 02:39:46 -08:00
parent 92499d9a70
commit 793ee8fd50
2 changed files with 270 additions and 151 deletions
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6
docs/CHANGES.txt
View file

@ -74,7 +74,11 @@ http://www.tuxpaint.org/
(or outside the canvas to abort).
Closes https://sourceforge.net/p/tuxpaint/feature-requests/209/
* WIP: A new color mixer has been added. WORK IN PROGRESS
* A new color mixer has been added, allowing red (magenta-ish),
yellow, and blue (cyan-ish), along with white ("tint"),
grey ("tone"), and black ("shade") to be added together to
form a desired color.
+ WIP: I'd like to add Undo/Redo options to the dialog. -bjk 2021.01.27
* Show a "pipette"-shaped mouse pointer when selecting a
color from the color palette, or the picture.

415
src/tuxpaint.c
View file

@ -1532,6 +1532,7 @@ static SDL_Surface *img_bold, *img_italic;
static SDL_Surface *img_label, *img_label_select;
static SDL_Surface *img_color_picker, *img_color_picker_thumb, *img_paintwell, *img_color_sel, *img_color_mix;
static int color_picker_x, color_picker_y;
static int color_mixer_reset;
static SDL_Surface *img_title_on, *img_title_off, *img_title_large_on, *img_title_large_off;
static SDL_Surface *img_title_names[NUM_TITLES];
@ -4486,6 +4487,9 @@ static void mainloop(void)
if (whichc >= 0 && whichc < NUM_COLORS)
{
int old_color;
old_color = cur_color;
cur_color = whichc;
draw_tux_text(TUX_KISS, color_names[cur_color], 1);
@ -4504,7 +4508,11 @@ static void mainloop(void)
else if (cur_color == (unsigned) COLOR_SELECTOR)
chose_color = do_color_sel(0);
else if (cur_color == (unsigned) COLOR_MIXER)
chose_color = do_color_mix();
{
chose_color = do_color_mix();
if (!chose_color)
cur_color = old_color;
}
if (cur_tool == TOOL_TEXT || cur_tool == TOOL_LABEL)
{
@ -22140,33 +22148,64 @@ static int do_color_picker(void)
return (chose);
}
enum {
COLOR_MIXER_BTN_RED,
COLOR_MIXER_BTN_YELLOW,
COLOR_MIXER_BTN_BLUE,
COLOR_MIXER_BTN_WHITE,
COLOR_MIXER_BTN_GREY,
COLOR_MIXER_BTN_BLACK,
#define NUM_MIXER_COLORS (COLOR_MIXER_BTN_BLACK + 1)
COLOR_MIXER_BTN_UNDO,
COLOR_MIXER_BTN_REDO,
COLOR_MIXER_BTN_CLEAR,
COLOR_MIXER_BTN_USE,
COLOR_MIXER_BTN_BACK,
NUM_COLOR_MIXER_BTNS
};
/* Hue (degrees 0-360, or -1 for N/A), Saturation (0.0-1.0), Value (0.0-1.0) */
float mixer_hsv[NUM_MIXER_COLORS][3] = {
{ 330.0, 1.0, 0.9 }, /* Red (Magenta-ish) */
{ 60.0, 1.0, 0.9 }, /* Yellow */
{ 210.0, 1.0, 0.9 }, /* Blue (Cyan-ish) */
{ -1, 0.0, 1.0 }, /* White */
{ -1, 0.0, 0.5 }, /* Grey */
{ -1, 0.0, 0.0 } /* Black */
};
/**
* Display a large prompt, allowing the user to mix
* colors together from hues and black/grey/white.
*/
static int do_color_mix(void)
{
int i, btn_clicked;
#ifndef NO_PROMPT_SHADOWS
int i;
SDL_Surface *alpha_surf;
#endif
Uint32(*getpixel_img_color_picker) (SDL_Surface *, int, int);
int cell_w, cell_h;
SDL_Rect dest;
int x, y, w;
int w;
int ox, oy;
int val_x, val_y, motioner;
int valhat_x, valhat_y, hatmotioner;
int stop;
Uint8 new_r, new_g, new_b;
float h, s, v;
Uint8 r, g, b;
int done, chose;
SDL_Event event;
SDLKey key;
int color_picker_left, color_picker_top;
int back_left, back_top;
int btn_lefts[NUM_COLOR_MIXER_BTNS], btn_tops[NUM_COLOR_MIXER_BTNS];
SDL_Rect color_example_dest;
SDL_Surface *backup;
SDL_Rect r_color_picker;
SDL_Rect r_final;
int old_color_mixer_reset;
val_x = val_y = motioner = 0;
valhat_x = valhat_y = hatmotioner = 0;
hide_blinking_cursor();
@ -22188,10 +22227,14 @@ static int do_color_mix(void)
ox = screen->w - color_button_w / 2;
oy = r_colors.y + r_colors.h / 2;
r_final.x = r_canvas.x + r_canvas.w / 2 - img_color_picker->w - 4;
r_final.y = r_canvas.h / 2 - img_color_picker->h / 2 - 2;
r_final.w = img_color_picker->w * 2;
r_final.h = img_color_picker->h;
cell_w = img_back->w + 2;
cell_h = img_back->h + 2;
/* FIXME */
r_final.x = r_canvas.x + (r_canvas.w - (cell_w * 6)) / 2 - 4;
r_final.y = ((r_canvas.h - (cell_w * 4)) / 2) - 2;
r_final.w = (cell_w * 6);
r_final.h = (cell_h * 4);
stop = r_final.h / 2 + 6 + 4;
@ -22249,60 +22292,12 @@ static int do_color_mix(void)
SDL_FillRect(screen, &dest, SDL_MapRGB(screen->format, 255, 255, 255));
/* Draw color palette: */
color_picker_left = r_final.x;
color_picker_top = r_final.y;
dest.x = color_picker_left;
dest.y = color_picker_top;
SDL_BlitSurface(img_color_picker, NULL, screen, &dest);
r_color_picker.x = dest.x;
r_color_picker.y = dest.y;
r_color_picker.w = dest.w;
r_color_picker.h = dest.h;
/* Draw last color position: */
dest.x = color_picker_x + color_picker_left - 3;
dest.y = color_picker_y + color_picker_top - 1;
dest.w = 7;
dest.h = 3;
SDL_FillRect(screen, &dest, SDL_MapRGB(screen->format, 0, 0, 0));
dest.x = color_picker_x + color_picker_left - 1;
dest.y = color_picker_y + color_picker_top - 3;
dest.w = 3;
dest.h = 7;
SDL_FillRect(screen, &dest, SDL_MapRGB(screen->format, 0, 0, 0));
dest.x = color_picker_x + color_picker_left - 2;
dest.y = color_picker_y + color_picker_top;
dest.w = 5;
dest.h = 1;
SDL_FillRect(screen, &dest, SDL_MapRGB(screen->format, 255, 255, 255));
dest.x = color_picker_x + color_picker_left;
dest.y = color_picker_y + color_picker_top - 2;
dest.w = 1;
dest.h = 5;
SDL_FillRect(screen, &dest, SDL_MapRGB(screen->format, 255, 255, 255));
/* Determine spot for example color: */
color_example_dest.x = color_picker_left + img_color_picker->w + 2;
color_example_dest.y = color_picker_top + 2;
color_example_dest.w = r_final.w / 2 - 2;
color_example_dest.h = r_final.h / 2 - 4;
color_example_dest.x = r_final.x + (cell_w) * 4;
color_example_dest.y = r_final.y + 2;
color_example_dest.w = cell_w * 2;
color_example_dest.h = cell_h * 2;
SDL_FillRect(screen, &color_example_dest, SDL_MapRGB(screen->format, 0, 0, 0));
@ -22319,31 +22314,97 @@ static int do_color_mix(void)
color_example_dest.h -= 4;
/* Draw current color picker color: */
/* Draw current color mixer color: */
if (color_mixer_reset)
{
/* FIXME: Modularize; duplicated below! */
SDL_FillRect(screen, &color_example_dest,
SDL_MapRGB(screen->format, 192, 192, 192));
SDL_FillRect(screen, &color_example_dest,
SDL_MapRGB(screen->format,
color_hexes[COLOR_PICKER][0],
color_hexes[COLOR_PICKER][1],
color_hexes[COLOR_PICKER][2]));
for (w = 0; w < color_example_dest.w; w += 4)
{
dest.x = color_example_dest.x + w;
dest.y = color_example_dest.y;
dest.w = 2;
dest.h = color_example_dest.h;
SDL_FillRect(screen, &dest,
SDL_MapRGB(screen->format, 128, 128, 128));
}
}
else
{
SDL_FillRect(screen, &color_example_dest,
SDL_MapRGB(screen->format,
color_hexes[COLOR_MIXER][0],
color_hexes[COLOR_MIXER][1],
color_hexes[COLOR_MIXER][2]));
}
rgbtohsv(color_hexes[COLOR_MIXER][0], color_hexes[COLOR_MIXER][1], color_hexes[COLOR_MIXER][2], &h, &s, &v);
if (s == 0)
{
/* Current color is totally greyscale; set hue to "N/A" */
h = -1;
}
/* Draw colors */
for (i = 0; i < NUM_MIXER_COLORS; i++)
{
btn_lefts[i] = r_final.x + ((i % 3) * cell_w) + 2;
btn_tops[i] = r_final.y + ((i / 3) * cell_h) + 2;
dest.x = btn_lefts[i];
dest.y = btn_tops[i];
dest.w = cell_w - 2;
dest.h = cell_h - 2;
hsvtorgb(mixer_hsv[i][0], mixer_hsv[i][1], mixer_hsv[i][2], &r, &g, &b);
SDL_FillRect(screen, &dest, SDL_MapRGB(screen->format, r, g, b));
}
/* Show "Clear" button */
btn_lefts[COLOR_MIXER_BTN_CLEAR] = r_final.x + (cell_w * 2) + 2;
btn_tops[COLOR_MIXER_BTN_CLEAR] = r_final.y + (cell_h * 3) + 2;
dest.x = btn_lefts[COLOR_MIXER_BTN_CLEAR];
dest.y = btn_tops[COLOR_MIXER_BTN_CLEAR];
SDL_BlitSurface(img_erase, NULL, screen, &dest);
/* FIXME */
/*
dest.x = btn_lefts[COLOR_MIXER_BTN_CLEAR] + (img_back->w - img_openlabels_back->w) / 2;
dest.y = btn_tops[COLOR_MIXER_BTN_CLEAR] + img_back->h - img_openlabels_back->h;
SDL_BlitSurface(img_openlabels_back, NULL, screen, &dest);
*/
/* Show "Back" button */
back_left =
(((PROMPT_W - 96 * 2) + w * 2 - img_color_picker->w) - img_back->w) / 2 + color_picker_left + img_color_picker->w;
back_top = color_picker_top + img_color_picker->h - img_back->h - 2;
dest.x = back_left;
dest.y = back_top;
btn_lefts[COLOR_MIXER_BTN_BACK] = r_final.x + (cell_w * 4) + 2;
btn_tops[COLOR_MIXER_BTN_BACK] = r_final.y + (cell_h * 3) + 2;
dest.x = btn_lefts[COLOR_MIXER_BTN_BACK];
dest.y = btn_tops[COLOR_MIXER_BTN_BACK];
SDL_BlitSurface(img_back, NULL, screen, &dest);
dest.x = back_left + (img_back->w - img_openlabels_back->w) / 2;
dest.y = back_top + img_back->h - img_openlabels_back->h;
dest.x = btn_lefts[COLOR_MIXER_BTN_BACK] + (img_back->w - img_openlabels_back->w) / 2;
dest.y = btn_tops[COLOR_MIXER_BTN_BACK] + img_back->h - img_openlabels_back->h;
SDL_BlitSurface(img_openlabels_back, NULL, screen, &dest);
/* Show "OK" button */
btn_lefts[COLOR_MIXER_BTN_USE] = r_final.x + (cell_w * 5) + 2;
btn_tops[COLOR_MIXER_BTN_USE] = r_final.y + (cell_h * 3) + 2;
if (!color_mixer_reset)
{
/* Only draw "OK" button when we can accept! */
dest.x = btn_lefts[COLOR_MIXER_BTN_USE];
dest.y = btn_tops[COLOR_MIXER_BTN_USE];
SDL_BlitSurface(img_yes, NULL, screen, &dest);
}
SDL_Flip(screen);
@ -22352,8 +22413,7 @@ static int do_color_mix(void)
done = 0;
chose = 0;
x = y = 0;
SDL_WarpMouse(back_left + button_w / 2, back_top - button_w / 2);
old_color_mixer_reset = color_mixer_reset;
do
{
@ -22388,84 +22448,140 @@ static int do_color_mix(void)
}
else if (event.type == SDL_MOUSEBUTTONUP && valid_click(event.button.button))
{
if (event.button.x >= color_picker_left &&
event.button.x < color_picker_left + img_color_picker->w &&
event.button.y >= color_picker_top && event.button.y < color_picker_top + img_color_picker->h)
btn_clicked = -1;
for (i = 0; i < NUM_COLOR_MIXER_BTNS && btn_clicked == -1; i++)
{
/* Picked a color! */
chose = 1;
done = 1;
x = event.button.x - color_picker_left;
y = event.button.y - color_picker_top;
color_picker_x = x;
color_picker_y = y;
if (event.button.x >= btn_lefts[i] &&
event.button.x < btn_lefts[i] + img_back->w &&
event.button.y >= btn_tops[i] &&
event.button.y < btn_tops[i] + img_back->h)
{
btn_clicked = i;
}
}
else if (event.button.x >= back_left &&
event.button.x < back_left + img_back->w &&
event.button.y >= back_top && event.button.y < back_top + img_back->h)
if (btn_clicked >= 0 && btn_clicked < NUM_MIXER_COLORS)
{
if (color_mixer_reset)
{
/* Starting fresh; add the chosen paint 100% */
h = mixer_hsv[btn_clicked][0];
s = mixer_hsv[btn_clicked][1];
v = mixer_hsv[btn_clicked][2];
color_mixer_reset = 0;
/* We can draw the "OK" button now! */
dest.x = btn_lefts[COLOR_MIXER_BTN_USE];
dest.y = btn_tops[COLOR_MIXER_BTN_USE];
dest.w = cell_w;
dest.h = cell_h;
SDL_BlitSurface(img_yes, NULL, screen, &dest);
SDL_UpdateRect(screen, dest.x, dest.y, dest.w, dest.h);
}
else
{
if (mixer_hsv[btn_clicked][0] != -1)
{
/* Paint we're adding has a hue */
if (h == -1)
{
/* Current color has no hue yet; pick it all up */
h = mixer_hsv[btn_clicked][0];
}
else
{
/* Blend the hues */
float new_h, circ_mean_avg_sin, circ_mean_avg_cos;
new_h = mixer_hsv[btn_clicked][0];
circ_mean_avg_sin = (sin(h * M_PI / 180.0) * 2.0);
circ_mean_avg_sin += sin(new_h * M_PI / 180.0);
circ_mean_avg_sin /= 3.0;
circ_mean_avg_cos = (cos(h * M_PI / 180.0) * 2.0);
circ_mean_avg_cos += cos(new_h * M_PI / 180.0);
circ_mean_avg_cos /= 3.0;
h = atan2(circ_mean_avg_sin, circ_mean_avg_cos) * 180.0 / M_PI;
if (h < 0.0)
h += 360.0;
else if (h >= 360.0)
h -= 360.0;
}
}
s = (s * 2.0 + mixer_hsv[btn_clicked][1]) / 3.0;
v = (v * 2.0 + mixer_hsv[btn_clicked][2]) / 3.0;
}
hsvtorgb(h, s, v, &new_r, &new_g, &new_b);
SDL_FillRect(screen, &color_example_dest, SDL_MapRGB(screen->format, new_r, new_g, new_b));
SDL_UpdateRect(screen, color_example_dest.x, color_example_dest.y, color_example_dest.w, color_example_dest.h);
playsound(screen, 1, SND_BUBBLE, 1, SNDPOS_CENTER, SNDDIST_NEAR);
}
else if (btn_clicked == COLOR_MIXER_BTN_BACK)
{
/* Decided to go Back */
chose = 0;
done = 1;
}
}
else if (event.type == SDL_MOUSEMOTION)
{
if (event.button.x >= color_picker_left &&
event.button.x < color_picker_left + img_color_picker->w &&
event.button.y >= color_picker_top && event.button.y < color_picker_top + img_color_picker->h)
else if (btn_clicked == COLOR_MIXER_BTN_USE && !color_mixer_reset)
{
/* Hovering over the colors! */
do_setcursor(cursor_pipette);
/* Show a big solid example of the color: */
x = event.button.x - color_picker_left;
y = event.button.y - color_picker_top;
getpixel_img_color_picker = getpixels[img_color_picker->format->BytesPerPixel];
SDL_GetRGB(getpixel_img_color_picker(img_color_picker, x, y), img_color_picker->format, &r, &g, &b);
SDL_FillRect(screen, &color_example_dest, SDL_MapRGB(screen->format, r, g, b));
SDL_UpdateRect(screen,
color_example_dest.x,
color_example_dest.y, color_example_dest.w, color_example_dest.h);
/* Decided to use this color */
chose = 1;
done = 1;
}
else
else if (btn_clicked == COLOR_MIXER_BTN_CLEAR)
{
/* Revert to current color picker color, so we know what it was,
and what we'll get if we go Back: */
/* Decided to clear the color choice & start over */
color_mixer_reset = 1;
/* Erase the "OK" button! */
dest.x = btn_lefts[COLOR_MIXER_BTN_USE];
dest.y = btn_tops[COLOR_MIXER_BTN_USE];
dest.w = cell_w;
dest.h = cell_h;
SDL_FillRect(screen, &dest, SDL_MapRGB(screen->format, 255, 255, 255));
SDL_UpdateRect(screen, dest.x, dest.y, dest.w, dest.h);
/* FIXME: Modularize; duplicated above! */
SDL_FillRect(screen, &color_example_dest,
SDL_MapRGB(screen->format,
color_hexes[COLOR_PICKER][0],
color_hexes[COLOR_PICKER][1],
color_hexes[COLOR_PICKER][2]));
SDL_MapRGB(screen->format, 192, 192, 192));
for (w = 0; w < color_example_dest.w; w += 4)
{
dest.x = color_example_dest.x + w;
dest.y = color_example_dest.y;
dest.w = 2;
dest.h = color_example_dest.h;
SDL_FillRect(screen, &dest,
SDL_MapRGB(screen->format, 128, 128, 128));
}
SDL_UpdateRect(screen,
color_example_dest.x,
color_example_dest.y, color_example_dest.w, color_example_dest.h);
SDL_UpdateRect(screen, color_example_dest.x, color_example_dest.y, color_example_dest.w, color_example_dest.h);
/* Change cursor to arrow (or hand, if over Back): */
if (event.button.x >= back_left &&
event.button.x < back_left + img_back->w &&
event.button.y >= back_top && event.button.y < back_top + img_back->h)
do_setcursor(cursor_hand);
else
do_setcursor(cursor_arrow);
#ifndef NOSOUND
if (!mute && use_sound)
{
if (!Mix_Playing(0))
{
eraser_sound = (eraser_sound + 1) % 2;
playsound(screen, 0, SND_ERASER1 + eraser_sound, 0, SNDPOS_CENTER, SNDDIST_NEAR);
}
}
#endif
}
oldpos_x = event.motion.x;
oldpos_y = event.motion.y;
/* FIXME - All the other controls */
}
else if (event.type == SDL_JOYAXISMOTION)
handle_joyaxismotion(event, &motioner, &val_x, &val_y);
@ -22492,18 +22608,18 @@ static int do_color_mix(void)
if (chose)
{
getpixel_img_color_picker = getpixels[img_color_picker->format->BytesPerPixel];
SDL_GetRGB(getpixel_img_color_picker(img_color_picker, x, y), img_color_picker->format, &r, &g, &b);
color_hexes[COLOR_MIXER][0] = r;
color_hexes[COLOR_MIXER][1] = g;
color_hexes[COLOR_MIXER][2] = b;
color_hexes[COLOR_MIXER][0] = new_r;
color_hexes[COLOR_MIXER][1] = new_g;
color_hexes[COLOR_MIXER][2] = new_b;
/* Re-render color mixer to show the current color it contains: */
render_color_button(COLOR_MIXER, NULL, img_color_mix);
}
else
{
color_mixer_reset = old_color_mixer_reset;
}
/* Remove the prompt: */
@ -25268,14 +25384,13 @@ static void setup_colors(void)
/* Add "Color Mixer" color */
color_names[NUM_COLORS] = strdup(gettext("Mix colors together."));
color_names[NUM_COLORS] = strdup(gettext("Click the primary colors (red, yellow, and blue), white (to tint), grey (to tone), and black (to shade), to mix together a new color."));
color_hexes[NUM_COLORS] = (Uint8 *) malloc(sizeof(Uint8) * 3);
color_hexes[NUM_COLORS][0] = 255;
color_hexes[NUM_COLORS][1] = 255;
color_hexes[NUM_COLORS][2] = 255;
color_mixer_reset = 1;
NUM_COLORS++;
printf("NUM_COLORS = %d\n", NUM_COLORS);
}
/* ================================================================================== */