Add search field on Font Popup

Added support to set child visibility property to ListBox items.

data/strings/en.ini

@@ -118,7 +118,6 @@ frames = Frames:
 pixel_ratio = Apply pixel ratio
 
 [font_popup]
-available_fonts = Available Fonts:
 load = Load
 
 [frame_properties]

data/widgets/font_popup.xml

@@ -1,8 +1,8 @@
 <!-- Aseprite -->
-<!-- Copyright (C) 2015-2016 by David Capello -->
+<!-- Copyright (C) 2015-2017 by David Capello -->
 <gui>
   <vbox id="font_popup">
-    <label text="@.available_fonts" />
+    <search id="search" magnet="true" />
     <view id="view" expansive="true" />
     <hbox>
       <boxfiller />

src/app/commands/cmd_keyboard_shortcuts.cpp

@@ -13,6 +13,7 @@
 #include "app/commands/command.h"
 #include "app/context.h"
 #include "app/file_selector.h"
+#include "app/match_words.h"
 #include "app/resource_finder.h"
 #include "app/tools/tool.h"
 #include "app/tools/tool_box.h"
@@ -487,8 +488,7 @@ private:
   void fillSearchList(const std::string& search) {
     deleteList(searchList());
 
-    std::vector<std::string> parts;
-    base::split_string(base::string_to_lower(search), parts, " ");
+    MatchWords match(search);
 
     ListBox* listBoxes[] = { menus(), commands(), tools(), actions() };
     int sectionIdx = 0;         // index 0 is menus
@@ -498,31 +498,24 @@ private:
       for (auto item : listBox->children()) {
         if (KeyItem* keyItem = dynamic_cast<KeyItem*>(item)) {
           std::string itemText = keyItem->searchableText();
-          std::string lowerItemText = base::string_to_lower(itemText);
-          int matches = 0;
+          if (!match(itemText))
+            continue;
 
-          for (const auto& part : parts) {
-            if (lowerItemText.find(part) != std::string::npos)
-              ++matches;
+          if (!group) {
+            group = new Separator(
+              section()->children()[sectionIdx]->text(), HORIZONTAL);
+            group->setStyle(SkinTheme::instance()->styles.separatorInView());
+
+            searchList()->addChild(group);
           }
 
-          if (matches == int(parts.size())) {
-            if (!group) {
-              group = new Separator(
-                section()->children()[sectionIdx]->text(), HORIZONTAL);
-              group->setStyle(SkinTheme::instance()->styles.separatorInView());
+          KeyItem* copyItem =
+            new KeyItem(itemText,
+                        keyItem->key(),
+                        keyItem->menuitem(), 0);
 
-              searchList()->addChild(group);
-            }
-
-            KeyItem* copyItem =
-              new KeyItem(itemText,
-                          keyItem->key(),
-                          keyItem->menuitem(), 0);
-
-            m_allKeyItems.push_back(copyItem);
-            searchList()->addChild(copyItem);
-          }
+          m_allKeyItems.push_back(copyItem);
+          searchList()->addChild(copyItem);
         }
       }
 

src/app/match_words.h

@@ -0,0 +1,44 @@
+// Aseprite
+// Copyright (C) 2017  David Capello
+//
+// This program is distributed under the terms of
+// the End-User License Agreement for Aseprite.
+
+#ifndef APP_MATCH_WORDS_H_INCLUDED
+#define APP_MATCH_WORDS_H_INCLUDED
+#pragma once
+
+#include "base/split_string.h"
+#include "base/string.h"
+
+#include <string>
+#include <vector>
+
+namespace app {
+
+  class MatchWords {
+  public:
+    MatchWords(const std::string& search) {
+      base::split_string(base::string_to_lower(search),
+                         m_parts, " ");
+    }
+
+    bool operator()(const std::string& item) {
+      std::string lowerItem = base::string_to_lower(item);
+      std::size_t matches = 0;
+
+      for (const auto& part : m_parts) {
+        if (lowerItem.find(part) != std::string::npos)
+          ++matches;
+      }
+
+      return (matches == m_parts.size());
+    }
+
+  private:
+    std::vector<std::string> m_parts;
+  };
+
+} // namespace app
+
+#endif

src/app/ui/font_popup.cpp

@@ -14,6 +14,8 @@
 #include "app/commands/commands.h"
 #include "app/console.h"
 #include "app/font_path.h"
+#include "app/match_words.h"
+#include "app/ui/search_entry.h"
 #include "app/ui/skin/skin_theme.h"
 #include "app/ui_context.h"
 #include "app/util/freetype_utils.h"
@@ -137,6 +139,7 @@ FontPopup::FontPopup()
 
   addChild(m_popup);
 
+  m_popup->search()->Change.connect(base::Bind<void>(&FontPopup::onSearchChange, this));
   m_popup->loadFont()->Click.connect(base::Bind<void>(&FontPopup::onLoadFont, this));
   m_listBox.setFocusMagnet(true);
   m_listBox.Change.connect(base::Bind<void>(&FontPopup::onChangeFont, this));
@@ -190,6 +193,23 @@ void FontPopup::showPopup(const gfx::Rect& bounds)
   openWindow();
 }
 
+void FontPopup::onSearchChange()
+{
+  std::string searchText = m_popup->search()->text();
+  Widget* firstItem = nullptr;
+
+  MatchWords match(searchText);
+  for (auto child : m_listBox.children()) {
+    bool visible = match(child->text());
+    if (visible && !firstItem)
+      firstItem = child;
+    child->setVisible(visible);
+  }
+
+  m_listBox.selectChild(firstItem);
+  layout();
+}
+
 void FontPopup::onChangeFont()
 {
   m_popup->loadFont()->setEnabled(true);

src/app/ui/font_popup.h

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2001-2016  David Capello
+// Copyright (C) 2001-2017  David Capello
 //
 // This program is distributed under the terms of
 // the End-User License Agreement for Aseprite.
@@ -31,6 +31,7 @@ namespace app {
     obs::signal<void(const std::string&)> Load;
 
   protected:
+    void onSearchChange();
     void onChangeFont();
     void onLoadFont();
 

src/ui/listbox.cpp

@@ -1,5 +1,5 @@
 // Aseprite UI Library
-// Copyright (C) 2001-2016  David Capello
+// Copyright (C) 2001-2017  David Capello
 //
 // This file is released under the terms of the MIT license.
 // Read LICENSE.txt for more information.
@@ -270,33 +270,42 @@ bool ListBox::onProcessMessage(Message* msg)
     case kKeyDownMessage:
       if (hasFocus() && !children().empty()) {
         int select = getSelectedIndex();
-        View* view = View::getView(this);
         int bottom = MAX(0, children().size()-1);
+        View* view = View::getView(this);
         KeyMessage* keymsg = static_cast<KeyMessage*>(msg);
+        KeyScancode scancode = keymsg->scancode();
 
-        switch (keymsg->scancode()) {
+        if (keymsg->onlyCmdPressed()) {
+          if (scancode == kKeyUp) scancode = kKeyHome;
+          if (scancode == kKeyDown) scancode = kKeyEnd;
+        }
+
+        switch (scancode) {
           case kKeyUp:
             // Select previous element.
-            if (select >= 0)
-              select--;
+            if (select >= 0) {
+              select = advanceIndexThroughVisibleItems(select, -1, true);
+            }
             // Or select the bottom of the list if there is no
             // selected item.
-            else
-              select = bottom;
+            else {
+              select = advanceIndexThroughVisibleItems(bottom+1, -1, true);
+            }
             break;
           case kKeyDown:
-            select++;
+            select = advanceIndexThroughVisibleItems(select, +1, true);
             break;
           case kKeyHome:
-            select = 0;
+            select = advanceIndexThroughVisibleItems(-1, +1, false);
             break;
           case kKeyEnd:
-            select = bottom;
+            select = advanceIndexThroughVisibleItems(bottom+1, -1, false);
             break;
           case kKeyPageUp:
             if (view) {
               gfx::Rect vp = view->viewportBounds();
-              select -= vp.h / textHeight();
+              select = advanceIndexThroughVisibleItems(
+                select, -vp.h / textHeight(), false);
             }
             else
               select = 0;
@@ -304,10 +313,12 @@ bool ListBox::onProcessMessage(Message* msg)
           case kKeyPageDown:
             if (view) {
               gfx::Rect vp = view->viewportBounds();
-              select += vp.h / textHeight();
+              select = advanceIndexThroughVisibleItems(
+                select, +vp.h / textHeight(), false);
             }
-            else
+            else {
               select = bottom;
+            }
             break;
           case kKeyLeft:
           case kKeyRight:
@@ -350,23 +361,33 @@ void ListBox::onResize(ResizeEvent& ev)
   Rect cpos = childrenBounds();
 
   for (auto child : children()) {
+    if (child->hasFlags(HIDDEN))
+      continue;
+
     cpos.h = child->sizeHint().h;
     child->setBounds(cpos);
 
-    cpos.y += child->bounds().h + this->childSpacing();
+    cpos.y += child->bounds().h + childSpacing();
   }
 }
 
 void ListBox::onSizeHint(SizeHintEvent& ev)
 {
   int w = 0, h = 0;
+  int visibles = 0;
 
-  UI_FOREACH_WIDGET_WITH_END(children(), it, end) {
-    Size reqSize = (*it)->sizeHint();
+  for (auto child : children()) {
+    if (child->hasFlags(HIDDEN))
+      continue;
+
+    Size reqSize = child->sizeHint();
 
     w = MAX(w, reqSize.w);
-    h += reqSize.h + (it+1 != end ? this->childSpacing(): 0);
+    h += reqSize.h;
+    ++visibles;
   }
+  if (visibles > 1)
+    h += childSpacing() * (visibles-1);
 
   w += border().width();
   h += border().height();
@@ -384,4 +405,45 @@ void ListBox::onDoubleClickItem()
   DoubleClickItem();
 }
 
+int ListBox::advanceIndexThroughVisibleItems(
+  int startIndex, int delta, const bool loop)
+{
+  const int bottom = MAX(0, children().size()-1);
+  const int sgn = SGN(delta);
+  int index = startIndex;
+
+  startIndex = MID(0, startIndex, bottom);
+  int lastVisibleIndex = startIndex;
+
+  bool cycle = false;
+
+  while (delta) {
+    index += sgn;
+
+    if (cycle && index == startIndex) {
+      break;
+    }
+    else if (index < 0) {
+      if (!loop)
+        break;
+      index = bottom-sgn;
+      cycle = true;
+    }
+    else if (index > bottom) {
+      if (!loop)
+        break;
+      index = 0-sgn;
+      cycle = true;
+    }
+    else {
+      Widget* item = getChildByIndex(index);
+      if (item && !item->hasFlags(HIDDEN)) {
+        lastVisibleIndex = index;
+        delta -= sgn;
+      }
+    }
+  }
+  return lastVisibleIndex;
+}
+
 } // namespace ui

src/ui/listbox.h

@@ -1,5 +1,5 @@
 // Aseprite UI Library
-// Copyright (C) 2001-2016  David Capello
+// Copyright (C) 2001-2017  David Capello
 //
 // This file is released under the terms of the MIT license.
 // Read LICENSE.txt for more information.
@@ -50,6 +50,9 @@ namespace ui {
     int getChildIndex(Widget* item);
     Widget* getChildByIndex(int index);
 
+    int advanceIndexThroughVisibleItems(
+      int startIndex, int delta, const bool loop);
+
     // True if this listbox accepts selecting multiple items at the
     // same time.
     bool m_multiselect;