Ephoto: Add scaler

7 years ago · 85c16161f5
parent 43b179f0aa
commit 85c16161f5
1 changed files with 267 additions and 0 deletions
--- a/src/bin/ephoto_scale.c
+++ b/src/bin/ephoto_scale.c
@ -0,0 +1,267 @@
+#include "ephoto.h"
+
+typedef struct _Ephoto_Scale Ephoto_Scale;
+struct _Ephoto_Scale
+{
+   Evas_Object *main;
+   Evas_Object *parent;
+   Evas_Object *image;
+   Evas_Object *editor;
+   Evas_Object *scalew;
+   Evas_Object *scaleh;
+   Evas_Object *aspect;
+   Eina_Stringshare *tmp_file;
+   Eina_List *handlers;
+   double aspectw;
+   double aspecth;
+   Evas_Coord w, h;
+   unsigned int *original_im_data;
+};
+
+static void _scale_width_changed(void *data, Evas_Object *obj EINA_UNUSED,
+    void *event_info EINA_UNUSED);
+
+static void
+_scale_height_changed(void *data, Evas_Object *obj EINA_UNUSED,
+    void *event_info EINA_UNUSED)
+{
+   Ephoto_Scale *es = data;
+   double nw;
+
+   if (!elm_check_state_get(es->aspect))
+     return;
+   evas_object_smart_callback_del(es->scalew, "changed",
+       _scale_width_changed);
+   nw = round(es->aspectw * elm_spinner_value_get(es->scaleh));
+   if (nw <= 1)
+     {
+        double nh;
+        evas_object_smart_callback_del(es->scaleh, "changed",
+            _scale_height_changed);
+        nh = round(es->aspecth * 1);
+        elm_spinner_value_set(es->scaleh, nh);
+        evas_object_smart_callback_add(es->scaleh, "changed",
+            _scale_height_changed, es);
+        nw = 1;
+     }
+   elm_spinner_value_set(es->scalew, nw);
+   evas_object_smart_callback_add(es->scalew, "changed",
+       _scale_width_changed, es);
+}
+
+static void
+_scale_width_changed(void *data, Evas_Object *obj EINA_UNUSED,
+    void *event_info EINA_UNUSED)
+{
+   Ephoto_Scale *es = data;
+   double nh;
+
+   if (!elm_check_state_get(es->aspect))
+     return;
+   evas_object_smart_callback_del(es->scaleh, "changed",
+       _scale_height_changed);
+   nh = round(es->aspecth * elm_spinner_value_get(es->scalew));
+   if (nh <= 1)
+     {
+        double nw;
+
+        evas_object_smart_callback_del(es->scalew, "changed",
+            _scale_width_changed);
+        nw = round(es->aspectw * 1);
+        elm_spinner_value_set(es->scalew, nw);
+        evas_object_smart_callback_add(es->scalew, "changed",
+            _scale_width_changed, es);
+        nh = 1;
+     }
+   elm_spinner_value_set(es->scaleh, nh);
+   evas_object_smart_callback_add(es->scaleh, "changed",
+       _scale_height_changed, es);
+}
+
+static Eina_Bool
+_es_reset(void *data, int type EINA_UNUSED,
+    void *event_info EINA_UNUSED)
+{
+   Ephoto_Scale *es = data;
+
+   elm_spinner_value_set(es->scalew, es->w);
+   elm_spinner_value_set(es->scaleh, es->h);
+   es->aspectw = (double)es->w / (double)es->h;
+   es->aspecth = (double)es->h / (double)es->w;
+   
+   return ECORE_CALLBACK_PASS_ON;
+}
+
+static Eina_Bool
+_es_apply(void *data, int type EINA_UNUSED,
+    void *event_info EINA_UNUSED)
+{
+   Ephoto_Scale *es = data;
+   const unsigned int *image_data;
+   unsigned int *im_data;
+   const char *key;
+   Evas_Object *im;
+   int w, h, alpha;
+   Ecore_Evas *ee;
+   Evas *eecanvas;
+
+   w = round(elm_spinner_value_get(es->scalew));
+   h = round(elm_spinner_value_get(es->scaleh));
+   evas_object_image_file_get(elm_image_object_get(es->image),
+       NULL, &key);
+
+   ee = ecore_evas_buffer_new(1, 1);
+   eecanvas = ecore_evas_get(ee);
+   evas_image_cache_set(eecanvas, 0);
+   evas_font_cache_set(eecanvas, 0);
+   alpha = 1;
+   
+   im = evas_object_image_add(eecanvas);
+   evas_object_image_load_size_set(im, w, h);
+   evas_object_image_load_orientation_set(im, EINA_TRUE);
+   evas_object_image_file_set(im, es->tmp_file, key);
+   alpha = evas_object_image_alpha_get(im);
+   evas_object_image_fill_set(im, 0, 0, w, h);
+   evas_object_move(im, 0, 0);
+   evas_object_resize(im, w, h);
+   
+   ecore_evas_alpha_set(ee, alpha);
+   ecore_evas_resize(ee, w, h);
+   
+   evas_object_show(im);
+
+   image_data = ecore_evas_buffer_pixels_get(ee);
+   im_data = malloc(sizeof(unsigned int) * w * h);
+   memcpy(im_data, image_data, sizeof(unsigned int) * w * h);
+
+   ephoto_single_browser_image_data_done(es->main, im_data, w, h);
+   ephoto_editor_del(es->editor);
+
+   evas_object_del(im);
+   ecore_evas_free(ee);
+
+   return ECORE_CALLBACK_PASS_ON;
+}
+
+static Eina_Bool
+_es_cancel(void *data, int type EINA_UNUSED,
+    void *event_info EINA_UNUSED)
+{
+   Ephoto_Scale *es = data;
+
+   ephoto_single_browser_cancel_editing(es->main);
+   ephoto_editor_del(es->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_Scale *es = data;
+   Ecore_Event_Handler *handler;
+
+   EINA_LIST_FREE(es->handlers, handler)
+     ecore_event_handler_del(handler);
+   ecore_file_unlink(es->tmp_file);
+   eina_stringshare_del(es->tmp_file);
+   free(es->original_im_data);
+   free(es);
+}
+
+void
+ephoto_scale_add(Ephoto *ephoto, Evas_Object *main, Evas_Object *parent,
+    Evas_Object *image, const char *file)
+{
+   Ephoto_Scale *es;
+   unsigned int *im_data;
+   char buf[PATH_MAX];
+
+   EINA_SAFETY_ON_NULL_GOTO(image, error);
+
+   es = calloc(1, sizeof(Ephoto_Scale));
+   EINA_SAFETY_ON_NULL_GOTO(es, error);
+
+   es->main = main;
+   es->parent = parent;
+   es->image = image;
+
+   snprintf(buf, PATH_MAX, "%s/.config/ephoto/temp.%s", getenv("HOME"),
+       strrchr(file, '.')+1);
+   es->tmp_file = eina_stringshare_add(buf);
+   if (ecore_file_exists(es->tmp_file))
+     ecore_file_unlink(es->tmp_file);
+   evas_object_image_save(elm_image_object_get(es->image), es->tmp_file,
+       NULL, NULL);
+
+   im_data =
+       evas_object_image_data_get(elm_image_object_get(es->image),
+       EINA_FALSE);
+   evas_object_image_size_get(elm_image_object_get(es->image), &es->w,
+       &es->h);
+   es->original_im_data = malloc(sizeof(unsigned int) * es->w * es->h);
+   memcpy(es->original_im_data, im_data,
+       sizeof(unsigned int) * es->w * es->h);
+   es->aspectw = (double)es->w / (double)es->h;
+   es->aspecth = (double)es->h / (double)es->w;
+
+   es->editor = ephoto_editor_add(ephoto, _("Scale Image"),
+       "es", es);
+   evas_object_event_callback_add(es->editor, EVAS_CALLBACK_DEL, _editor_del,
+       es);
+
+   es->aspect = elm_check_add(es->editor);
+   elm_object_text_set(es->aspect, _("Keep Aspect"));
+   evas_object_size_hint_align_set(es->aspect, 0.5, EVAS_HINT_FILL);
+   elm_check_state_set(es->aspect, EINA_TRUE);
+   elm_box_pack_start(es->editor, es->aspect);
+   evas_object_show(es->aspect);
+
+   es->scaleh = elm_spinner_add(es->editor);
+   elm_spinner_editable_set(es->scaleh, EINA_TRUE);
+   elm_spinner_label_format_set(es->scaleh, "Height: %1.0f");
+   elm_spinner_step_set(es->scaleh, 1);
+   elm_spinner_wrap_set(es->scaleh, EINA_FALSE);
+   elm_spinner_min_max_set(es->scaleh, 1, 99999);
+   elm_spinner_value_set(es->scaleh, es->h);
+   evas_object_size_hint_align_set(es->scaleh, EVAS_HINT_FILL, 0.5);
+   evas_object_size_hint_weight_set(es->scaleh, EVAS_HINT_EXPAND, EVAS_HINT_FILL);
+   evas_object_smart_callback_add(es->scaleh, "changed",
+                                  _scale_height_changed, es);
+   elm_box_pack_start(es->editor, es->scaleh);
+   evas_object_show(es->scaleh);
+
+   es->scalew = elm_spinner_add(es->editor);
+   elm_spinner_editable_set(es->scalew, EINA_TRUE);
+   elm_spinner_label_format_set(es->scalew, "Width: %1.0f");
+   elm_spinner_step_set(es->scalew, 1);
+   elm_spinner_wrap_set(es->scalew, EINA_FALSE);
+   elm_spinner_min_max_set(es->scalew, 1, 99999);
+   elm_spinner_value_set(es->scalew, es->w);
+   evas_object_size_hint_align_set(es->scalew, EVAS_HINT_FILL, 0.5);
+   evas_object_size_hint_weight_set(es->scalew, EVAS_HINT_EXPAND, EVAS_HINT_FILL);
+   evas_object_smart_callback_add(es->scalew, "changed",
+                                  _scale_width_changed, es);
+   elm_box_pack_start(es->editor, es->scalew);
+   evas_object_show(es->scalew);
+
+   es->handlers =
+       eina_list_append(es->handlers,
+       ecore_event_handler_add(EPHOTO_EVENT_EDITOR_RESET,
+           _es_reset, es));
+   es->handlers =
+       eina_list_append(es->handlers,
+       ecore_event_handler_add(EPHOTO_EVENT_EDITOR_APPLY,
+           _es_apply, es));
+   es->handlers =
+       eina_list_append(es->handlers,
+       ecore_event_handler_add(EPHOTO_EVENT_EDITOR_CANCEL,
+           _es_cancel, es));
+
+   return;
+
+  error:
+   return;
+}
+