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#include "ephoto.h"
typedef struct _Ephoto_BCG Ephoto_BCG;
struct _Ephoto_BCG
{
Evas_Object *main;
Evas_Object *parent;
Evas_Object *image;
Evas_Object *editor;
Evas_Object *bslider;
Evas_Object *cslider;
Evas_Object *gslider;
Eina_List *handlers;
int contrast;
int brightness;
double gamma;
int w, h;
unsigned int *original_im_data;
};
static int
_normalize_color(int color)
{
if (color < 0)
return 0;
else if (color > 255)
return 255;
else
return color;
}
static int
_mul_color_alpha(int color, int alpha)
{
if (alpha > 0 && alpha < 255)
return color * (255 / alpha);
else
return color;
}
static int
_demul_color_alpha(int color, int alpha)
{
if (alpha > 0 && alpha < 255)
return (color * alpha) / 255;
else
return color;
}
unsigned int *
_ephoto_bcg_adjust_brightness(Ephoto_BCG *ebcg, int brightness,
unsigned int *image_data)
{
unsigned int *im_data, *im_data_new, *p1, *p2;
int x, y;
int a, r, g, b, bb, gg, rr;
im_data = malloc(sizeof(unsigned int) * ebcg->w * ebcg->h);
if (image_data)
memcpy(im_data, image_data, sizeof(unsigned int) * ebcg->w * ebcg->h);
else
memcpy(im_data, ebcg->original_im_data,
sizeof(unsigned int) * ebcg->w * ebcg->h);
ebcg->brightness = brightness;
im_data_new = malloc(sizeof(unsigned int) * ebcg->w * ebcg->h);
for (y = 0; y < ebcg->h; y++)
{
p1 = im_data + (y * ebcg->w);
p2 = im_data_new + (y * ebcg->w);
for (x = 0; x < ebcg->w; x++)
{
b = (int) ((*p1) & 0xff);
g = (int) ((*p1 >> 8) & 0xff);
r = (int) ((*p1 >> 16) & 0xff);
a = (int) ((*p1 >> 24) & 0xff);
b = _mul_color_alpha(b, a);
g = _mul_color_alpha(g, a);
r = _mul_color_alpha(r, a);
bb = (int) b + ebcg->brightness;
gg = (int) g + ebcg->brightness;
rr = (int) r + ebcg->brightness;
bb = _normalize_color(bb);
gg = _normalize_color(gg);
rr = _normalize_color(rr);
bb = _demul_color_alpha(bb, a);
gg = _demul_color_alpha(gg, a);
rr = _demul_color_alpha(rr, a);
*p2 = (a << 24) | (rr << 16) | (gg << 8) | bb;
p2++;
p1++;
}
}
ephoto_single_browser_image_data_update(ebcg->main, ebcg->image, EINA_FALSE,
im_data_new, ebcg->w, ebcg->h);
free(im_data);
return im_data_new;
}
unsigned int *
_ephoto_bcg_adjust_contrast(Ephoto_BCG *ebcg, int contrast,
unsigned int *image_data)
{
unsigned int *im_data, *im_data_new, *p1, *p2;
int x, y, top, bottom;
int a, r, g, b, bb, gg, rr;
float factor;
im_data = malloc(sizeof(unsigned int) * ebcg->w * ebcg->h);
if (image_data)
memcpy(im_data, image_data, sizeof(unsigned int) * ebcg->w * ebcg->h);
else
memcpy(im_data, ebcg->original_im_data,
sizeof(unsigned int) * ebcg->w * ebcg->h);
ebcg->contrast = contrast;
top = ((255 + (contrast)) * 259);
bottom = ((259 - (contrast)) * 255);
factor = (float) top / (float) bottom;
im_data_new = malloc(sizeof(unsigned int) * ebcg->w * ebcg->h);
for (y = 0; y < ebcg->h; y++)
{
p1 = im_data + (y * ebcg->w);
p2 = im_data_new + (y * ebcg->w);
for (x = 0; x < ebcg->w; x++)
{
b = (int) ((*p1) & 0xff);
g = (int) ((*p1 >> 8) & 0xff);
r = (int) ((*p1 >> 16) & 0xff);
a = (int) ((*p1 >> 24) & 0xff);
b = _mul_color_alpha(b, a);
g = _mul_color_alpha(g, a);
r = _mul_color_alpha(r, a);
bb = (int) ((factor * (b - 128)) + 128);
gg = (int) ((factor * (g - 128)) + 128);
rr = (int) ((factor * (r - 128)) + 128);
bb = _normalize_color(bb);
gg = _normalize_color(gg);
rr = _normalize_color(rr);
bb = _demul_color_alpha(bb, a);
gg = _demul_color_alpha(gg, a);
rr = _demul_color_alpha(rr, a);
*p2 = (a << 24) | (rr << 16) | (gg << 8) | bb;
p2++;
p1++;
}
}
ephoto_single_browser_image_data_update(ebcg->main, ebcg->image, EINA_FALSE,
im_data_new, ebcg->w, ebcg->h);
free(im_data);
return im_data_new;
}
unsigned int *
_ephoto_bcg_adjust_gamma(Ephoto_BCG *ebcg, double gamma,
unsigned int *image_data)
{
unsigned int *im_data, *im_data_new, *p1, *p2;
int x, y;
int a, r, g, b, bb, gg, rr;
im_data = malloc(sizeof(unsigned int) * ebcg->w * ebcg->h);
if (image_data)
memcpy(im_data, image_data, sizeof(unsigned int) * ebcg->w * ebcg->h);
else
memcpy(im_data, ebcg->original_im_data,
sizeof(unsigned int) * ebcg->w * ebcg->h);
ebcg->gamma = 1 / gamma;
im_data_new = malloc(sizeof(unsigned int) * ebcg->w * ebcg->h);
for (y = 0; y < ebcg->h; y++)
{
p1 = im_data + (y * ebcg->w);
p2 = im_data_new + (y * ebcg->w);
for (x = 0; x < ebcg->w; x++)
{
b = (int) ((*p1) & 0xff);
g = (int) ((*p1 >> 8) & 0xff);
r = (int) ((*p1 >> 16) & 0xff);
a = (int) ((*p1 >> 24) & 0xff);
b = _mul_color_alpha(b, a);
g = _mul_color_alpha(g, a);
r = _mul_color_alpha(r, a);
bb = (int) (pow(((double) b / 255), ebcg->gamma) * 255);
gg = (int) (pow(((double) g / 255), ebcg->gamma) * 255);
rr = (int) (pow(((double) r / 255), ebcg->gamma) * 255);
bb = _normalize_color(bb);
gg = _normalize_color(gg);
rr = _normalize_color(rr);
bb = _demul_color_alpha(bb, a);
gg = _demul_color_alpha(gg, a);
rr = _demul_color_alpha(rr, a);
*p2 = (a << 24) | (rr << 16) | (gg << 8) | bb;
p2++;
p1++;
}
}
ephoto_single_browser_image_data_update(ebcg->main, ebcg->image, EINA_FALSE,
im_data_new, ebcg->w, ebcg->h);
free(im_data);
return im_data_new;
}
static void
_brightness_slider_changed(void *data, Evas_Object *obj,
void *event_info EINA_UNUSED)
{
Ephoto_BCG *ebcg = data;
int brightness;
unsigned int *image_data, *image_data_two;
brightness = elm_slider_value_get(obj);
image_data = _ephoto_bcg_adjust_brightness(ebcg, brightness, NULL);
image_data_two =
_ephoto_bcg_adjust_contrast(ebcg, ebcg->contrast, image_data);
_ephoto_bcg_adjust_gamma(ebcg, ebcg->gamma, image_data_two);
}
static void
_contrast_slider_changed(void *data, Evas_Object *obj,
void *event_info EINA_UNUSED)
{
Ephoto_BCG *ebcg = data;
int contrast;
unsigned int *image_data, *image_data_two;
contrast = elm_slider_value_get(obj);
image_data = _ephoto_bcg_adjust_contrast(ebcg, contrast, NULL);
image_data_two =
_ephoto_bcg_adjust_brightness(ebcg, ebcg->brightness, image_data);
_ephoto_bcg_adjust_gamma(ebcg, ebcg->gamma, image_data_two);
}
static void
_gamma_slider_changed(void *data, Evas_Object *obj,
void *event_info EINA_UNUSED)
{
Ephoto_BCG *ebcg = data;
double gamma;
unsigned int *image_data, *image_data_two;
gamma = elm_slider_value_get(obj);
image_data = _ephoto_bcg_adjust_gamma(ebcg, gamma, NULL);
image_data_two =
_ephoto_bcg_adjust_brightness(ebcg, ebcg->brightness, image_data);
_ephoto_bcg_adjust_contrast(ebcg, ebcg->contrast, image_data_two);
}
static Eina_Bool
_bcg_reset(void *data, int type EINA_UNUSED,
void *event_info EINA_UNUSED)
{
Ephoto_BCG *ebcg = data;
elm_slider_value_set(ebcg->bslider, 0);
elm_slider_value_set(ebcg->cslider, 0);
elm_slider_value_set(ebcg->gslider, 1);
ebcg->brightness = 0;
ebcg->contrast = 0;
ebcg->gamma = 1;
_brightness_slider_changed(ebcg, ebcg->bslider, NULL);
return ECORE_CALLBACK_PASS_ON;
}
static Eina_Bool
_bcg_apply(void *data, int type EINA_UNUSED,
void *event_info EINA_UNUSED)
{
Ephoto_BCG *ebcg = data;
unsigned int *image_data;
int w, h;
image_data =
evas_object_image_data_get(elm_image_object_get(ebcg->image),
EINA_FALSE);
evas_object_image_size_get(elm_image_object_get(ebcg->image), &w, &h);
ephoto_single_browser_image_data_update(ebcg->main, ebcg->image, EINA_TRUE,
image_data, w, h);
ephoto_editor_del(ebcg->editor);
return ECORE_CALLBACK_PASS_ON;
}
static Eina_Bool
_bcg_cancel(void *data, int type EINA_UNUSED,
void *event_info EINA_UNUSED)
{
Ephoto_BCG *ebcg = data;
elm_slider_value_set(ebcg->bslider, 0);
elm_slider_value_set(ebcg->cslider, 0);
elm_slider_value_set(ebcg->gslider, 1);
ebcg->brightness = 0;
ebcg->contrast = 0;
ebcg->gamma = 1;
_brightness_slider_changed(ebcg, ebcg->bslider, NULL);
ephoto_single_browser_cancel_editing(ebcg->main, ebcg->image);
ephoto_editor_del(ebcg->editor);
return ECORE_CALLBACK_PASS_ON;
}
static void
_editor_del(void *data, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUSED,
void *event_info EINA_UNUSED)
{
Ephoto_BCG *ebcg = data;
Ecore_Event_Handler *handler;
EINA_LIST_FREE(ebcg->handlers, handler)
ecore_event_handler_del(handler);
free(ebcg->original_im_data);
free(ebcg);
}
void
ephoto_bcg_add(Evas_Object *main, Evas_Object *parent, Evas_Object *image)
{
Evas_Object *slider;
Ephoto_BCG *ebcg;
unsigned int *im_data;
EINA_SAFETY_ON_NULL_GOTO(image, error);
ebcg = calloc(1, sizeof(Ephoto_BCG));
EINA_SAFETY_ON_NULL_GOTO(ebcg, error);
ebcg->brightness = 0;
ebcg->contrast = 0;
ebcg->gamma = 1;
ebcg->main = main;
ebcg->parent = parent;
ebcg->image = image;
im_data =
evas_object_image_data_get(elm_image_object_get(ebcg->image),
EINA_FALSE);
evas_object_image_size_get(elm_image_object_get(ebcg->image), &ebcg->w,
&ebcg->h);
ebcg->original_im_data = malloc(sizeof(unsigned int) * ebcg->w * ebcg->h);
memcpy(ebcg->original_im_data, im_data,
sizeof(unsigned int) * ebcg->w * ebcg->h);
ebcg->editor = ephoto_editor_add(parent, _("Brightness/Contrast/Gamma"),
"ebcg", ebcg);
evas_object_event_callback_add(ebcg->editor, EVAS_CALLBACK_DEL, _editor_del,
ebcg);
slider = elm_slider_add(ebcg->editor);
elm_object_text_set(slider, _("Gamma"));
elm_slider_min_max_set(slider, -0.1, 3);
elm_slider_step_set(slider, .1);
elm_slider_value_set(slider, 1);
elm_slider_unit_format_set(slider, "%1.2f");
evas_object_size_hint_weight_set(slider, EVAS_HINT_EXPAND, EVAS_HINT_FILL);
evas_object_size_hint_align_set(slider, EVAS_HINT_FILL, 0.5);
evas_object_smart_callback_add(slider, "delay,changed",
_gamma_slider_changed, ebcg);
elm_box_pack_start(ebcg->editor, slider);
evas_object_show(slider);
ebcg->gslider = slider;
slider = elm_slider_add(ebcg->editor);
elm_object_text_set(slider, _("Contrast"));
elm_slider_min_max_set(slider, -100, 100);
elm_slider_step_set(slider, 1);
elm_slider_value_set(slider, 0);
elm_slider_unit_format_set(slider, "%1.0f");
evas_object_size_hint_weight_set(slider, EVAS_HINT_EXPAND, EVAS_HINT_FILL);
evas_object_size_hint_align_set(slider, EVAS_HINT_FILL, 0.5);
evas_object_smart_callback_add(slider, "delay,changed",
_contrast_slider_changed, ebcg);
elm_box_pack_start(ebcg->editor, slider);
evas_object_show(slider);
ebcg->cslider = slider;
slider = elm_slider_add(ebcg->editor);
elm_object_text_set(slider, _("Brightness"));
elm_slider_min_max_set(slider, -100, 100);
elm_slider_step_set(slider, 1);
elm_slider_value_set(slider, 0);
elm_slider_unit_format_set(slider, "%1.0f");
evas_object_size_hint_weight_set(slider, EVAS_HINT_EXPAND, EVAS_HINT_FILL);
evas_object_size_hint_align_set(slider, EVAS_HINT_FILL, 0.5);
evas_object_smart_callback_add(slider, "delay,changed",
_brightness_slider_changed, ebcg);
elm_box_pack_start(ebcg->editor, slider);
evas_object_show(slider);
ebcg->bslider = slider;
ebcg->handlers =
eina_list_append(ebcg->handlers,
ecore_event_handler_add(EPHOTO_EVENT_EDITOR_RESET,
_bcg_reset, ebcg));
ebcg->handlers =
eina_list_append(ebcg->handlers,
ecore_event_handler_add(EPHOTO_EVENT_EDITOR_APPLY,
_bcg_apply, ebcg));
ebcg->handlers =
eina_list_append(ebcg->handlers,
ecore_event_handler_add(EPHOTO_EVENT_EDITOR_CANCEL,
_bcg_cancel, ebcg));
return;
error:
return;
}