Introduce AlphaEntry class and make InkOpacityField extend from it (fix #1544)

src/app/CMakeLists.txt

@@ -336,6 +336,7 @@ if(ENABLE_UI)
     file_selector.cpp
     modules/gfx.cpp
     modules/gui.cpp
+    ui/alpha_entry.cpp
     ui/alpha_slider.cpp
     ui/app_menuitem.cpp
     ui/backup_indicator.cpp

src/app/ui/alpha_entry.cpp

@@ -0,0 +1,67 @@
+// Aseprite UI Library
+// Copyright (C) 2024  Igara Studio S.A.
+//
+// This file is released under the terms of the MIT license.
+// Read LICENSE.txt for more information.
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "app/pref/preferences.h"
+#include "app/ui/alpha_entry.h"
+#include "base/scoped_value.h"
+#include "gfx/rect.h"
+#include "gfx/region.h"
+#include "os/font.h"
+#include "ui/fit_bounds.h"
+#include "ui/manager.h"
+#include "ui/message.h"
+#include "ui/popup_window.h"
+#include "ui/scale.h"
+#include "ui/size_hint_event.h"
+#include "ui/slider.h"
+#include "ui/system.h"
+#include "ui/theme.h"
+
+#include <algorithm>
+#include <cmath>
+
+namespace app {
+
+using namespace gfx;
+
+AlphaEntry::AlphaEntry(AlphaSlider::Type type)
+  : IntEntry(0, 255)
+{
+  m_slider = std::make_unique<AlphaSlider>(0, type);
+  m_slider->setFocusStop(false); // In this way the IntEntry doesn't lost the focus
+  m_slider->setTransparent(true);
+  m_slider->Change.connect([this] { this->onChangeSlider(); });
+}
+
+int AlphaEntry::getValue() const
+{
+  int value = m_slider->convertTextToValue(text());
+  if (static_cast<AlphaSlider*>(m_slider.get())->getAlphaRange() == app::gen::AlphaRange::PERCENTAGE)
+    value = std::round(((double)m_slider->getMaxValue())*((double)value)/((double)100));
+
+  return std::clamp(value, m_min, m_max);
+}
+
+void AlphaEntry::setValue(int value)
+{
+  value = std::clamp(value, m_min, m_max);
+
+  if (m_popupWindow && !m_changeFromSlider)
+    m_slider->setValue(value);
+
+  if (static_cast<AlphaSlider*>(m_slider.get())->getAlphaRange() == app::gen::AlphaRange::PERCENTAGE)
+    value = std::round(((double)100)*((double)value)/((double)m_slider->getMaxValue()));
+
+  setText(m_slider->convertValueToText(value));
+
+  onValueChange();
+}
+
+} // namespace app

src/app/ui/alpha_entry.h

@@ -0,0 +1,36 @@
+// Aseprite UI Library
+// Copyright (C) 2024  Igara Studio S.A.
+//
+// This file is released under the terms of the MIT license.
+// Read LICENSE.txt for more information.
+
+#ifndef APP_UI_ALPHA_ENTRY_H_INCLUDED
+#define APP_UI_ALPHA_ENTRY_H_INCLUDED
+#pragma once
+
+#include "ui/int_entry.h"
+#include "app/ui/alpha_slider.h"
+
+#include <memory>
+
+using namespace ui;
+
+
+namespace ui {
+  class CloseEvent;
+  class PopupWindow;
+}
+
+namespace app {
+
+  class AlphaEntry : public IntEntry {
+  public:
+    AlphaEntry(AlphaSlider::Type type);
+
+    int getValue() const override;
+    void setValue(int value) override;
+  };
+
+} // namespace ui
+
+#endif

src/app/ui/context_bar.cpp

@@ -34,6 +34,7 @@
 #include "app/tools/tool.h"
 #include "app/tools/tool_box.h"
 #include "app/tools/tool_loop_modifiers.h"
+#include "app/ui/alpha_entry.h"
 #include "app/ui/brush_popup.h"
 #include "app/ui/button_set.h"
 #include "app/ui/color_button.h"
@@ -710,9 +711,9 @@ private:
   obs::scoped_connection m_conn;
 };
 
-class ContextBar::InkOpacityField : public IntEntry {
+class ContextBar::InkOpacityField : public AlphaEntry {
 public:
-  InkOpacityField() : IntEntry(0, 255) {
+  InkOpacityField() : AlphaEntry(AlphaSlider::Type::OPACITY) {
   }
 
 protected:
@@ -720,7 +721,7 @@ protected:
     if (g_updatingFromCode)
       return;
 
-    IntEntry::onValueChange();
+    AlphaEntry::onValueChange();
     base::ScopedValue lockFlag(g_updatingFromCode, true);
 
     int newValue = getValue();
@@ -1914,6 +1915,8 @@ ContextBar::ContextBar(TooltipManager* tooltipManager,
     [this]{ onFgOrBgColorChange(doc::Brush::ImageColor::MainColor); });
   m_bgColorConn = pref.colorBar.bgColor.AfterChange.connect(
     [this]{ onFgOrBgColorChange(doc::Brush::ImageColor::BackgroundColor); });
+  m_alphaRangeConn = pref.range.opacity.AfterChange.connect(
+    [this]{ onOpacityRangeChange(); });
   m_keysConn = KeyboardShortcuts::instance()->UserChange.connect(
     [this, tooltipManager]{ setupTooltips(tooltipManager); });
   m_dropPixelsConn = m_dropPixels->DropPixels.connect(&ContextBar::onDropPixels, this);
@@ -2056,6 +2059,11 @@ void ContextBar::onFgOrBgColorChange(doc::Brush::ImageColor imageColor)
   }
 }
 
+void ContextBar::onOpacityRangeChange()
+{
+  updateForActiveTool();
+}
+
 void ContextBar::onDropPixels(ContextBarObserver::DropAction action)
 {
   notify_observers(&ContextBarObserver::onDropPixels, action);
@@ -2143,7 +2151,7 @@ void ContextBar::updateForTool(tools::Tool* tool)
     m_contiguous->setSelected(toolPref->contiguous());
 
     m_inkType->setInkTypeIcon(toolPref->ink());
-    m_inkOpacity->setTextf("%d", toolPref->opacity());
+    m_inkOpacity->setValue(toolPref->opacity());
 
     hasInkWithOpacity =
       ((isPaint && tools::inkHasOpacity(toolPref->ink())) ||

src/app/ui/context_bar.h

@@ -123,6 +123,7 @@ namespace app {
     void onBrushAngleChange();
     void onSymmetryModeChange();
     void onFgOrBgColorChange(doc::Brush::ImageColor imageColor);
+    void onOpacityRangeChange();
     void onDropPixels(ContextBarObserver::DropAction action);
     void updateSliceFields(const Site& site);
 
@@ -203,6 +204,7 @@ namespace app {
     obs::scoped_connection m_symmModeConn;
     obs::scoped_connection m_fgColorConn;
     obs::scoped_connection m_bgColorConn;
+    obs::scoped_connection m_alphaRangeConn;
     obs::scoped_connection m_keysConn;
     obs::scoped_connection m_dropPixelsConn;
     obs::scoped_connection m_sizeConn;

src/ui/int_entry.cpp

@@ -36,13 +36,13 @@ IntEntry::IntEntry(int min, int max, SliderDelegate* sliderDelegate)
   : Entry(int(std::floor(std::log10(double(max))))+1, "")
   , m_min(min)
   , m_max(max)
-  , m_slider(m_min, m_max, m_min, sliderDelegate)
   , m_popupWindow(nullptr)
   , m_changeFromSlider(false)
 {
-  m_slider.setFocusStop(false); // In this way the IntEntry doesn't lost the focus
-  m_slider.setTransparent(true);
-  m_slider.Change.connect(&IntEntry::onChangeSlider, this);
+  m_slider = std::make_unique<Slider>(m_min, m_max, m_min, sliderDelegate);
+  m_slider->setFocusStop(false); // In this way the IntEntry doesn't lost the focus
+  m_slider->setTransparent(true);
+  m_slider->Change.connect(&IntEntry::onChangeSlider, this);
   initTheme();
 }
 
@@ -53,7 +53,7 @@ IntEntry::~IntEntry()
 
 int IntEntry::getValue() const
 {
-  int value = m_slider.convertTextToValue(text());
+  int value = m_slider->convertTextToValue(text());
   return std::clamp(value, m_min, m_max);
 }
 
@@ -61,10 +61,10 @@ void IntEntry::setValue(int value)
 {
   value = std::clamp(value, m_min, m_max);
 
-  setText(m_slider.convertValueToText(value));
+  setText(m_slider->convertValueToText(value));
 
   if (m_popupWindow && !m_changeFromSlider)
-    m_slider.setValue(value);
+    m_slider->setValue(value);
 
   onValueChange();
 }
@@ -92,7 +92,7 @@ bool IntEntry::onProcessMessage(Message* msg)
         MouseMessage* mouseMsg = static_cast<MouseMessage*>(msg);
         Widget* pick = manager()->pickFromScreenPos(
           display()->nativeWindow()->pointToScreen(mouseMsg->position()));
-        if (pick == &m_slider) {
+        if (pick == m_slider.get()) {
           releaseMouse();
 
           MouseMessage mouseMsg2(kMouseDownMessage,
@@ -140,7 +140,7 @@ bool IntEntry::onProcessMessage(Message* msg)
 void IntEntry::onInitTheme(InitThemeEvent& ev)
 {
   Entry::onInitTheme(ev);
-  m_slider.initTheme();       // The slider might not be in the popup window
+  m_slider->initTheme();       // The slider might not be in the popup window
   if (m_popupWindow)
     m_popupWindow->initTheme();
 }
@@ -150,8 +150,8 @@ void IntEntry::onSizeHint(SizeHintEvent& ev)
   int trailing = font()->textLength(getSuffix());
   trailing = std::max(trailing, 2*theme()->getEntryCaretSize(this).w);
 
-  int min_w = font()->textLength(m_slider.convertValueToText(m_min));
-  int max_w = font()->textLength(m_slider.convertValueToText(m_max)) + trailing;
+  int min_w = font()->textLength(m_slider->convertValueToText(m_min));
+  int max_w = font()->textLength(m_slider->convertValueToText(m_max)) + trailing;
 
   int w = std::max(min_w, max_w);
   int h = textHeight();
@@ -175,7 +175,7 @@ void IntEntry::onValueChange()
 
 void IntEntry::openPopup()
 {
-  m_slider.setValue(getValue());
+  m_slider->setValue(getValue());
 
   // We weren't able to reproduce it, but there are crash reports
   // where this openPopup() function is called and the popup is still
@@ -186,7 +186,7 @@ void IntEntry::openPopup()
 
   m_popupWindow = std::make_unique<TransparentPopupWindow>(PopupWindow::ClickBehavior::CloseOnClickInOtherWindow);
   m_popupWindow->setAutoRemap(false);
-  m_popupWindow->addChild(&m_slider);
+  m_popupWindow->addChild(m_slider.get());
   m_popupWindow->Close.connect(&IntEntry::onPopupClose, this);
 
   fit_bounds(
@@ -229,7 +229,7 @@ void IntEntry::closePopup()
 void IntEntry::onChangeSlider()
 {
   base::ScopedValue lockFlag(m_changeFromSlider, true);
-  setValue(m_slider.getValue());
+  setValue(m_slider->getValue());
   selectAllText();
 }
 
@@ -244,8 +244,8 @@ void IntEntry::onPopupClose(CloseEvent& ev)
 void IntEntry::removeSlider()
 {
   if (m_popupWindow &&
-      m_slider.parent() == m_popupWindow.get()) {
-    m_popupWindow->removeChild(&m_slider);
+      m_slider->parent() == m_popupWindow.get()) {
+    m_popupWindow->removeChild(m_slider.get());
   }
 }
 

src/ui/int_entry.h

@@ -22,32 +22,33 @@ namespace ui {
   class IntEntry : public Entry {
   public:
     IntEntry(int min, int max, SliderDelegate* sliderDelegate = nullptr);
-    ~IntEntry();
+    virtual ~IntEntry();
 
-    int getValue() const;
-    void setValue(int value);
+    virtual int getValue() const;
+    virtual void setValue(int value);
 
   protected:
     bool onProcessMessage(Message* msg) override;
     void onInitTheme(InitThemeEvent& ev) override;
     void onSizeHint(SizeHintEvent& ev) override;
     void onChange() override;
+    virtual void onChangeSlider();
 
     // New events
     virtual void onValueChange();
 
+    int m_min;
+    int m_max;
+    std::unique_ptr<PopupWindow> m_popupWindow;
+    bool m_changeFromSlider;
+    std::unique_ptr<Slider> m_slider;
+
   private:
     void openPopup();
     void closePopup();
-    void onChangeSlider();
     void onPopupClose(CloseEvent& ev);
     void removeSlider();
 
-    int m_min;
-    int m_max;
-    Slider m_slider;
-    std::unique_ptr<PopupWindow> m_popupWindow;
-    bool m_changeFromSlider;
   };
 
 } // namespace ui