Updated widgets for sending BEGIN_EDIT and END_EDIT events

Author: sadko4u

include/lsp-plug.in/tk/widgets/specific/AudioEnvelope.h

@@ -174,7 +174,9 @@ namespace lsp
                 size_t                  nBufCapacity;           // Drawing buffer capacity in floats
 
             protected:
+                static status_t         slot_begin_edit(Widget *sender, void *ptr, void *data);
                 static status_t         slot_on_change(Widget *sender, void *ptr, void *data);
+                static status_t         slot_end_edit(Widget *sender, void *ptr, void *data);
 
             protected:
                 void                    do_destroy();
@@ -258,7 +260,9 @@ namespace lsp
                 virtual status_t        on_mouse_scroll(const ws::event_t *e) override;
 
             public:
+                virtual status_t        on_begin_edit();
                 virtual status_t        on_change();
+                virtual status_t        on_end_edit();
         };
     } /* namespace tk */
 } /* namespace lsp */

src/main/widgets/graph/GraphDot.cpp

@@ -582,7 +582,11 @@ namespace lsp
             float old       = sZValue.sValue.get();
             sZValue.sValue.add(delta);
             if (old != sZValue.sValue.get())
+            {
+                sSlots.execute(SLOT_BEGIN_EDIT, this);
                 sSlots.execute(SLOT_CHANGE, this);
+                sSlots.execute(SLOT_END_EDIT, this);
+            }
 
             return STATUS_OK;
         }

src/main/widgets/simple/Fader.cpp

@@ -529,7 +529,7 @@ namespace lsp
             if (sInvertMouseVScroll.get())
                 step            = -step;
 
-            // Update value
+            // Compute delta
             float delta = 0.0;
             if (e->nCode == ws::MCD_UP)
                 delta   = step;
@@ -538,7 +538,10 @@ namespace lsp
             else
                 return STATUS_OK;
 
+            // Update value
+            sSlots.execute(SLOT_BEGIN_EDIT, this);
             update_value(sValue.get() + delta);
+            sSlots.execute(SLOT_END_EDIT, this);
 
             return STATUS_OK;
         }

src/main/widgets/simple/Knob.cpp

@@ -460,7 +460,7 @@ namespace lsp
             if (sInvertMouseVScroll.get())
                 step            = -step;
 
-            // Update value
+            // Compute delta
             float delta = 0.0;
             if (e->nCode == ws::MCD_UP)
                 delta   = step;
@@ -469,7 +469,10 @@ namespace lsp
             else
                 return STATUS_OK;
 
+            // Update value
+            sSlots.execute(SLOT_BEGIN_EDIT, this);
             update_value(delta);
+            sSlots.execute(SLOT_END_EDIT, this);
 
             return STATUS_OK;
         }

src/main/widgets/simple/RangeSlider.cpp

@@ -584,9 +584,13 @@ namespace lsp
             if (old_max != max)
                 flags      |= CHANGE_MAX;
 
-            sValues.set(min, max);
             if (flags != 0)
+            {
+                sValues.set(min, max);
+                sSlots.execute(SLOT_BEGIN_EDIT, this, &flags);
                 sSlots.execute(SLOT_CHANGE, this, &flags);
+                sSlots.execute(SLOT_END_EDIT, this, &flags);
+            }
         }
 
         ssize_t RangeSlider::find_button(const ws::event_t *e)

src/main/widgets/specific/AudioEnvelope.cpp

@@ -293,6 +293,8 @@ namespace lsp
 
             // Add slots
             handler_id_t id = sSlots.add(SLOT_CHANGE, slot_on_change, self());
+            if (id >= 0) id = sSlots.add(SLOT_BEGIN_EDIT, slot_begin_edit, self());
+            if (id >= 0) id = sSlots.add(SLOT_END_EDIT, slot_end_edit, self());
 
             return (id >= 0) ? STATUS_OK : -id;
         }
@@ -681,6 +683,16 @@ namespace lsp
             return STATUS_OK;
         }
 
+        status_t AudioEnvelope::on_begin_edit()
+        {
+            return STATUS_OK;
+        }
+
+        status_t AudioEnvelope::on_end_edit()
+        {
+            return STATUS_OK;
+        }
+
         void AudioEnvelope::sync_handler(const ws::event_t *e)
         {
             point_t *point = find_point(e->nLeft, e->nTop);
@@ -717,6 +729,9 @@ namespace lsp
 
                 nLastX      = e->nLeft;
                 nLastY      = e->nTop;
+
+                if (pHandler != NULL)
+                    sSlots.execute(SLOT_BEGIN_EDIT, this);
             }
 
             nBMask         |= size_t(1) << e->nCode;
@@ -727,6 +742,11 @@ namespace lsp
         status_t AudioEnvelope::on_mouse_up(const ws::event_t *e)
         {
             nBMask         &= ~(size_t(1) << e->nCode);
+            if (nBMask == 0)
+            {
+                if (pHandler != NULL)
+                    sSlots.execute(SLOT_END_EDIT, this);
+            }
 
             return STATUS_OK;
         }
@@ -816,7 +836,11 @@ namespace lsp
             const float old     = pHandler->pZ->get();
             pHandler->pZ->add(delta);
             if (old != pHandler->pZ->get())
+            {
+                sSlots.execute(SLOT_BEGIN_EDIT, this);
                 sSlots.execute(SLOT_CHANGE, this);
+                sSlots.execute(SLOT_END_EDIT, this);
+            }
 
             return STATUS_OK;
         }
@@ -827,6 +851,18 @@ namespace lsp
             return (self != NULL) ? self->on_change() : STATUS_BAD_ARGUMENTS;
         }
 
+        status_t AudioEnvelope::slot_begin_edit(Widget *sender, void *ptr, void *data)
+        {
+            AudioEnvelope *self = widget_ptrcast<AudioEnvelope>(ptr);
+            return (self != NULL) ? self->on_begin_edit() : STATUS_BAD_ARGUMENTS;
+        }
+
+        status_t AudioEnvelope::slot_end_edit(Widget *sender, void *ptr, void *data)
+        {
+            AudioEnvelope *self = widget_ptrcast<AudioEnvelope>(ptr);
+            return (self != NULL) ? self->on_end_edit() : STATUS_BAD_ARGUMENTS;
+        }
+
         void AudioEnvelope::set_curve_function(curve_function_t function, void *data)
         {
             pFunction       = function;