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Color picker: Value slider: Interact on hover motion

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This commit is contained in:
Bill Kendrick 2022-03-16 00:33:25 -07:00
parent 43b84c774a
commit 491862d2da
2 changed files with 106 additions and 52 deletions
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2
docs/CHANGES.txt
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@ -7,7 +7,7 @@ Various contributors (see below, and AUTHORS.txt)
http://www.tuxpaint.org/
2022.March.2 (0.9.28)
2022.March.16 (0.9.28)
* Improvements to "Paint" and "Lines" tools:
------------------------------------------
* Brush spacing may now be altered within Tux Paint.

156
src/tuxpaint.c
View file

@ -22,7 +22,7 @@
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
(See COPYING.txt)
June 14, 2002 - March 2, 2022
June 14, 2002 - March 16, 2022
*/
#include "platform.h"
@ -2096,6 +2096,7 @@ static int do_new_dialog_add_colors(SDL_Surface * *thumbs, int num_files, int *d
static int do_color_picker(void);
static void draw_color_picker_crosshairs(int color_picker_left, int color_picker_top, int color_picker_val_left, int color_picker_val_top);
static void draw_color_picker_values(int l, int t);
static void draw_color_picker_palette_and_values(int color_picker_left, int color_picker_top, int color_picker_val_left, int color_picker_val_top);
static void render_color_picker_palette(void);
static int do_color_sel(int temp_mode);
static int do_color_mix(void);
@ -21868,9 +21869,6 @@ static int do_color_sel(int temp_mode)
/**
* Display a large prompt, allowing the user to pick a
* color from a large palette.
*
* FIXME: Various options here would be helpful
* (RGB, HSV, color wheel, etc.) -bjk 2022.01.25
*/
static int do_color_picker(void)
{
@ -21899,6 +21897,7 @@ static int do_color_picker(void)
val_x = val_y = motioner = 0;
valhat_x = valhat_y = hatmotioner = 0;
int old_cp_x, old_cp_y, old_cp_v;
int last_motion_within_val_slider;
/* Remember old choices, in case we hit [Back] */
old_cp_x = color_picker_x;
@ -22084,7 +22083,7 @@ static int do_color_picker(void)
done = 0;
chose = 0;
x = y = 0;
SDL_WarpMouse(back_left + button_w / 2, back_top - button_w / 2);
last_motion_within_val_slider = 0;
do
{
@ -22155,7 +22154,7 @@ static int do_color_picker(void)
event.button.y <= color_picker_val_top + img_color_picker_val->h)
{
/* Picked a value from the slider */
y = event.button.y - color_picker_val_top;
color_picker_v = y;
@ -22173,26 +22172,7 @@ static int do_color_picker(void)
/* Redraw hue/sat palette, and val slider, and redraw crosshairs */
draw_color_picker_values(color_picker_val_left, color_picker_val_top);
dest.x = color_picker_left;
dest.y = color_picker_top;
SDL_BlitSurface(img_color_picker, NULL, screen, &dest);
SDL_UpdateRect(screen, dest.x, dest.y, dest.w, dest.h);
draw_color_picker_crosshairs(color_picker_left, color_picker_top, color_picker_val_left, color_picker_val_top);
dest.x = color_picker_val_left;
dest.y = color_picker_val_top;
dest.w = img_back->w;
dest.h = img_color_picker_val->h;
SDL_UpdateRect(screen, dest.x, dest.y, dest.w, dest.h);
dest.x = color_picker_left;
dest.y = color_picker_top;
dest.w = img_color_picker->w;
dest.h = img_color_picker->h;
SDL_UpdateRect(screen, dest.x, dest.y, dest.w, dest.h);
draw_color_picker_palette_and_values(color_picker_left, color_picker_top, color_picker_val_left, color_picker_val_top);
}
else if (event.button.x >= done_left &&
event.button.x < done_left + img_yes->w &&
@ -22215,21 +22195,29 @@ static int do_color_picker(void)
}
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)
if (event.button.x >= color_picker_val_left &&
event.button.y >= color_picker_val_top &&
event.button.x <= color_picker_val_left + img_back->w &&
event.button.y <= color_picker_val_top + img_color_picker_val->h)
{
/* Hovering over the colors! */
int tmp_color_picker_v;
do_setcursor(cursor_pipette);
/* Hovering over a value from the slider */
y = event.button.y - color_picker_val_top;
tmp_color_picker_v = color_picker_v;
color_picker_v = y;
/* Re-render the palette with the new value */
render_color_picker_palette();
color_picker_v = tmp_color_picker_v;
/* Show a big solid example of the color: */
x = event.button.x - color_picker_left;
y = event.button.y - color_picker_top;
SDL_GetRGB(getpixel_img_color_picker(img_color_picker, x, y), img_color_picker->format, &r, &g, &b);
SDL_GetRGB(getpixel_img_color_picker(img_color_picker, color_picker_x, color_picker_y), img_color_picker->format, &r, &g, &b);
dest.x = color_example_dest.x + color_example_dest.w / 4;
dest.y = color_example_dest.y + color_example_dest.h / 4;
@ -22239,32 +22227,73 @@ static int do_color_picker(void)
SDL_FillRect(screen, &dest, SDL_MapRGB(screen->format, r, g, b));
SDL_UpdateRect(screen, dest.x, dest.y, dest.w, dest.h);
/* Redraw hue/sat palette, and val slider, and redraw crosshairs */
draw_color_picker_palette_and_values(color_picker_left, color_picker_top, color_picker_val_left, color_picker_val_top);
last_motion_within_val_slider = 1;
}
else
{
/* Revert to current color picker color */
if (last_motion_within_val_slider)
{
render_color_picker_palette();
draw_color_picker_palette_and_values(color_picker_left, color_picker_top, color_picker_val_left, color_picker_val_top);
last_motion_within_val_slider = 0;
}
SDL_GetRGB(getpixel_img_color_picker(img_color_picker, color_picker_x, color_picker_y),
img_color_picker->format, &r, &g, &b);
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)
{
/* Hovering over the colors! */
SDL_FillRect(screen, &color_example_dest, SDL_MapRGB(screen->format, r, g, b));
do_setcursor(cursor_pipette);
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 or Done): */
/* Show a big solid example of the color: */
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 if (event.button.x >= done_left &&
event.button.x < done_left + img_yes->w &&
event.button.y >= done_top && event.button.y < done_top + img_yes->h)
do_setcursor(cursor_hand);
x = event.button.x - color_picker_left;
y = event.button.y - color_picker_top;
SDL_GetRGB(getpixel_img_color_picker(img_color_picker, x, y), img_color_picker->format, &r, &g, &b);
dest.x = color_example_dest.x + color_example_dest.w / 4;
dest.y = color_example_dest.y + color_example_dest.h / 4;
dest.w = color_example_dest.w / 2;
dest.h = color_example_dest.h / 2;
SDL_FillRect(screen, &dest, SDL_MapRGB(screen->format, r, g, b));
SDL_UpdateRect(screen, dest.x, dest.y, dest.w, dest.h);
}
else
do_setcursor(cursor_arrow);
{
/* Revert to current color picker color */
SDL_GetRGB(getpixel_img_color_picker(img_color_picker, color_picker_x, color_picker_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);
/* Change cursor to arrow (or hand, if over Back or Done): */
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 if (event.button.x >= done_left &&
event.button.x < done_left + img_yes->w &&
event.button.y >= done_top && event.button.y < done_top + img_yes->h)
do_setcursor(cursor_hand);
else
do_setcursor(cursor_arrow);
}
}
oldpos_x = event.motion.x;
@ -22322,6 +22351,31 @@ static int do_color_picker(void)
}
static void draw_color_picker_palette_and_values(int color_picker_left, int color_picker_top, int color_picker_val_left, int color_picker_val_top) {
SDL_Rect dest;
draw_color_picker_values(color_picker_val_left, color_picker_val_top);
dest.x = color_picker_left;
dest.y = color_picker_top;
SDL_BlitSurface(img_color_picker, NULL, screen, &dest);
SDL_UpdateRect(screen, dest.x, dest.y, dest.w, dest.h);
draw_color_picker_crosshairs(color_picker_left, color_picker_top, color_picker_val_left, color_picker_val_top);
dest.x = color_picker_val_left;
dest.y = color_picker_val_top;
dest.w = img_back->w;
dest.h = img_color_picker_val->h;
SDL_UpdateRect(screen, dest.x, dest.y, dest.w, dest.h);
dest.x = color_picker_left;
dest.y = color_picker_top;
dest.w = img_color_picker->w;
dest.h = img_color_picker->h;
SDL_UpdateRect(screen, dest.x, dest.y, dest.w, dest.h);
}
static void render_color_picker_palette(void)
{
int x, y;
@ -22337,7 +22391,7 @@ static void render_color_picker_palette(void)
((float) x / ((float) img_color_picker->w)),
1.0 - (((float) color_picker_v) / ((float) img_color_picker_val->h)),
&r, &g, &b);
putpixel(img_color_picker, x, y,
putpixel(img_color_picker, x, y,
SDL_MapRGBA(img_color_picker->format, r, g, b, 255));
}
}
@ -22910,7 +22964,7 @@ static int do_color_mix(void)
if (!Mix_Playing(0))
{
eraser_sound = (eraser_sound + 1) % 2;
playsound(screen, 0, SND_ERASER1 + eraser_sound, 0, SNDPOS_CENTER, SNDDIST_NEAR);
}
}