Resizable Dialog

Part of DflCategory

Description

Demonstrates DialogApp that adjusts the position and size of several controls when the overall application window is resized. (Caveat: Done by a DFL newbie so this may not be best way to accomplish the goal.)

Example

// To compile:

// dmd DflTest dfl.lib -L/exet:nt/su:windows:4.0

private import std.string;

private import dfl.form, dfl.event, dfl.drawing, dfl.application;
private import dfl.button, dfl.textbox, dfl.treeview;


class ResizableForm: Form
{
this()
{
  text = "DflResizeTest";

  CreateControls();
}

const int DEFAULT_LEFT          = 2;
const int DEFAULT_TOP           = 2;

const int DEFAULT_HEIGHT_ADJUST = 45;
const int DEFAULT_WIDTH_ADJUST  = 10;
const int DEFAULT_RIGHT         = 504;

const int DEFAULT_BOTTOM        = 404;
const int CHAPTREE_WIDTH        = 122;
const int DEFAULT_BUTTON_HEIGHT = 25;

const int DEFAULT_BUTTON_WIDTH  = ((CHAPTREE_WIDTH / 2) - 3);
const int SEARCHBUTTON_HEIGHT   = DEFAULT_BUTTON_HEIGHT;
const int BOOKSBUTTON_WIDTH     = DEFAULT_BUTTON_WIDTH;

const int HELPBUTTON_WIDTH      = DEFAULT_BUTTON_WIDTH;
const int HELPBUTTON_LEFT       = (DEFAULT_RIGHT 
                                  - (DEFAULT_BUTTON_WIDTH + 5));
const int SEARCHBUTTON_WIDTH    = DEFAULT_BUTTON_WIDTH;

const int SEARCHBUTTON_LEFT     = (DEFAULT_BUTTON_WIDTH + 4);
const int SEARCHWORDS_LEFT      = (CHAPTREE_WIDTH + 0);
const int CHAPTREE_HEIGHT       = (DEFAULT_BOTTOM 
                                  - (DEFAULT_BUTTON_HEIGHT 
                                  + DEFAULT_HEIGHT_ADJUST));

const int CHAPTREE_TOP          = (DEFAULT_BUTTON_HEIGHT + 4);
const int OPTIONSBUTTON_WIDTH   = 60;
const int OPTIONSBUTTON_LEFT    = (DEFAULT_RIGHT 
                                  - (OPTIONSBUTTON_WIDTH 
                                  + DEFAULT_BUTTON_WIDTH + 8));

const int TEXTVIEWER_WIDTH      = (DEFAULT_RIGHT 
                                  - (CHAPTREE_WIDTH + 3));
const int SEARCHWORDS_WIDTH     = (DEFAULT_RIGHT 
                                  - (CHAPTREE_WIDTH 
                                  + OPTIONSBUTTON_WIDTH 
                                  + DEFAULT_BUTTON_WIDTH + 8));

private void CreateControls()
{
  size = Size((DEFAULT_RIGHT - DEFAULT_LEFT) + DEFAULT_WIDTH_ADJUST, 
              DEFAULT_BOTTOM - DEFAULT_TOP);  // Overall form size

  resize ~= &ResizeForm;

  booksButton = new Button;
  booksButton.parent = this;
  booksButton.text = "Books";
  booksButton.location = Point(DEFAULT_LEFT, DEFAULT_TOP);
  booksButton.size = Size(DEFAULT_BUTTON_WIDTH, 
                          DEFAULT_BUTTON_HEIGHT);

  helpButton = new Button;
  helpButton.parent = this;
  helpButton.text = "Help";
  helpButton.size = Size(DEFAULT_BUTTON_WIDTH, 
                         DEFAULT_BUTTON_HEIGHT);

  optionsButton = new Button;
  optionsButton.parent = this;
  optionsButton.text = "Options";
  optionsButton.size = Size(DEFAULT_BUTTON_WIDTH, 
                            DEFAULT_BUTTON_HEIGHT);

  searchButton = new Button;
  searchButton.parent = this;
  searchButton.text = "Search";
  searchButton.location = Point(SEARCHBUTTON_LEFT, DEFAULT_TOP);
  searchButton.size = Size(DEFAULT_BUTTON_WIDTH, 
                           DEFAULT_BUTTON_HEIGHT);

  searchWordsTextBox = new TextBox;
  searchWordsTextBox.parent = this;
  searchWordsTextBox.text = "searchWordsTextBox";
  searchWordsTextBox.location = Point(SEARCHWORDS_LEFT, 
                                      DEFAULT_TOP);
  searchWordsTextBox.multiline = false;
  searchWordsTextBox.readOnly = false;

  viewerTextBox = new TextBox;
  viewerTextBox.parent = this;
  viewerTextBox.text = "viewerTextBox";
  viewerTextBox.location = Point(CHAPTREE_WIDTH, CHAPTREE_TOP);
  viewerTextBox.multiline = true;
  viewerTextBox.readOnly = true;
  viewerTextBox.wordWrap = true;

  chapSelectorTree = new TreeView;
  chapSelectorTree.parent = this;
  chapSelectorTree.location = Point(DEFAULT_LEFT, CHAPTREE_TOP);

  ResizeForm(null, null);
}
  

private void ResizeForm(Object sender, EventArgs ea)
{
  Size formClientSize = clientSize();
  Rect formBounds     = bounds();
  int  formHeight     = formClientSize.height;
  int  formWidth      = formClientSize.width;
   
  int helpButtonLeft    = (formWidth  - (DEFAULT_BUTTON_WIDTH + 5));
  int chapTreeHeight    = (formHeight - (DEFAULT_BUTTON_HEIGHT + 10));
  int optionsButtonLeft = (formWidth  - (OPTIONSBUTTON_WIDTH 
                           + DEFAULT_BUTTON_WIDTH + 8));
  int textViewerWidth   = (formWidth  - (CHAPTREE_WIDTH + 3));
  int searchWordsWidth  = (formWidth  - (CHAPTREE_WIDTH 
                           + OPTIONSBUTTON_WIDTH 
                           + DEFAULT_BUTTON_WIDTH + 8));

  searchWordsTextBox.size = Size(searchWordsWidth, 
                                 DEFAULT_BUTTON_HEIGHT);
  viewerTextBox.size = Size(textViewerWidth, chapTreeHeight);
  chapSelectorTree.size = Size(CHAPTREE_WIDTH, chapTreeHeight);

  optionsButton.location = Point(optionsButtonLeft, DEFAULT_TOP);
  helpButton.location = Point(helpButtonLeft, DEFAULT_TOP);
}


private Button    booksButton;
private Button    helpButton;
private Button    optionsButton;
private Button    searchButton;

private TreeView  chapSelectorTree;
private TextBox   searchWordsTextBox;

private TextBox   viewerTextBox;
}

int main()
{
  Application.run(new ResizableForm);
  
  return 0;
}

Source

Link	http://www.dsource.org/tutorials/index.php?show_example=136
Posted by	Lynn
Date/Time	Wed Dec 22, 2004 4:04 pm