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git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@149 d0cd1f9f-072b-0410-8dd7-cf729c803f20
95 lines
3.5 KiB
C++
95 lines
3.5 KiB
C++
///////////////////////////////////////////////////////////////////////
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// File: svmnode.h
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// description_: ScrollView Menu Node
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// Author: Joern Wanke
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// Created: Thu Nov 29 2007
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//
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// (C) Copyright 2007, Google Inc.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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///////////////////////////////////////////////////////////////////////
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//
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// A SVMenuNode is an entity which contains the mapping from a menu entry on
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// the server side to the corresponding associated commands on the client.
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// It is designed to be a tree structure with a root node, which can then be
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// used to generate the appropriate messages to the server to display the
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// menu structure there.
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// A SVMenuNode can both be used in the context_ of popup menus as well as
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// menu bars.
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#ifndef THIRD_PARTY_TESSERACT_VIEWER_SVMNODE_H__
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#define THIRD_PARTY_TESSERACT_VIEWER_SVMNODE_H__
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class ScrollView;
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class SVMenuNode {
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public:
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// Creating the (empty) root menu node.
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SVMenuNode();
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// Destructor for every node.
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~SVMenuNode();
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// Create a new sub menu node with just a caption. This is used to create
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// nodes which act as parent nodes to other nodes (e.g. submenus).
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SVMenuNode* AddChild(const char* txt);
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// Create a "normal" menu node which is associated with a command event.
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void AddChild(const char* txt, int command_event);
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// Create a flag menu node.
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void AddChild(const char* txt, int command_event, int tv);
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// Create a menu node with an associated value (which might be changed
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// through the gui).
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void AddChild(const char* txt, int command_event, const char* val);
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// Create a menu node with an associated value and description_.
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void AddChild(const char* txt, int command_event,
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const char* val, const char* desc);
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// Build a menu structure for the server and send the necessary messages.
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// Should be called on the root node. If menu_bar is true, a menu_bar menu
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// is built (e.g. on top of the window), if it is false a popup menu is
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// built which gets shown by right clicking on the window.
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void BuildMenu(ScrollView *sv, bool menu_bar = true);
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private:
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// Constructor holding the actual node data.
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SVMenuNode(int command_event, const char* txt, int tv,
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bool check_box_entry, const char* val, const char* desc);
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// Adds a new menu node to the current node.
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void AddChild(SVMenuNode* svmn);
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// The parent node of this node.
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SVMenuNode* parent_;
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// The first child of this node.
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SVMenuNode* child_;
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// The next "sibling" of this node (e.g. same parent).
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SVMenuNode* next_;
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// Whether this menu node actually is a flag.
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bool is_check_box_entry_;
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// The command event associated with a specific menu node. Should be unique.
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int cmd_event_;
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// The caption associated with a specific menu node.
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char* text_;
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// The value of the flag (if this menu node is a flag).
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bool toggle_value_;
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// The value of the menu node. (optional)
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const char* value_;
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// A description_ of the value. (optional)
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const char* description_;
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};
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#endif // THIRD_PARTY_TESSERACT_VIEWER_SVMNODE_H__
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