mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
113 lines
3.4 KiB
113 lines
3.4 KiB
// Dlg class.
|
|
//
|
|
// Provides some helper methods to resize a dialog window.
|
|
|
|
function Dlg()
|
|
{
|
|
this._cxPerEm = 1;
|
|
this._cyPerEm = 1;
|
|
|
|
this._dxFrame = 0;
|
|
this._dyFrame = 0;
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------------------------------
|
|
Purpose: Calculates pixels-per-em metrics, based upon the given dialog size string
|
|
("dialogWidth:xxx; dialogHeight:yyy").
|
|
|
|
The body of the dialog requires a DIV with width and height set to 100%.
|
|
This is needed so we can account for the frame of the dialog when we
|
|
resize (client vs. window rect).
|
|
|
|
*/
|
|
function Dlg_CalcMetrics(szDlgSize, idDivDlg)
|
|
{
|
|
// There's a race condition where offsetHeight can change in the middle of this
|
|
// function if the content is greater than the window. So take a snapshot of it
|
|
// now.
|
|
var cxDiv = idDivDlg.offsetWidth;
|
|
var cyDiv = idDivDlg.offsetHeight;
|
|
|
|
var ichWidth = szDlgSize.indexOf("dialogWidth:") + 12; // 12 = cch of "dialogWidth:"
|
|
var ichHeight = szDlgSize.indexOf("dialogHeight:") + 13; // 13 = cch of "dialogHeight:"
|
|
var cxDlgEm = parseInt(szDlgSize.substring(ichWidth));
|
|
var cyDlgEm = parseInt(szDlgSize.substring(ichHeight));
|
|
|
|
/*
|
|
alert('dialogWidth=' + window.dialogWidth + '; offsetWidth=' + cxDiv +
|
|
'; clientWidth=' + idDivDlg.clientWidth + '\n' +
|
|
'dialogHeight=' + window.dialogHeight + '; offsetHeight=' + cyDiv +
|
|
'; clientHeight=' + idDivDlg.clientHeight + '\n' +
|
|
'cxDlgEm=' + cxDlgEm + '; cyDlgEm=' + cyDlgEm);
|
|
*/
|
|
|
|
// dialogWidth is in pixels when read, but is in ems when written.
|
|
// The inconsistency amazes me...but I'll make use of that fact!
|
|
|
|
var cxWindow = parseInt(window.dialogWidth); // we expect this to be in pixels
|
|
var cyWindow = parseInt(window.dialogHeight); // we expect this to be in pixels
|
|
|
|
// We need to set the window size of the dialog, which is bigger than the client
|
|
// size. So calculate the difference so we can adjust the rectangle appropriately.
|
|
|
|
this._dxFrame = cxWindow - cxDiv;
|
|
this._dyFrame = cyWindow - cyDiv;
|
|
|
|
this._cxPerEm = cxWindow / cxDlgEm;
|
|
this._cyPerEm = cyWindow / cyDlgEm;
|
|
}
|
|
|
|
|
|
function Dlg_CxToEms(cx)
|
|
{
|
|
return cx / this._cxPerEm;
|
|
}
|
|
|
|
|
|
function Dlg_CyToEms(cy)
|
|
{
|
|
return cy / this._cyPerEm;
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------------------------------
|
|
Purpose: Resize the dialog to the given width and height (in pixels).
|
|
*/
|
|
function Dlg_Resize(cx, cy)
|
|
{
|
|
var cxNew = this.CxToEms(cx + this._dxFrame);
|
|
var cyNew = this.CyToEms(cy + this._dyFrame);
|
|
|
|
// Set the dialog size to entirely accomodate the contents of the dialog
|
|
/*
|
|
alert('cx=' + cx + '; cxNew=' + cxNew + '; this._dxFrame=' + this._dxFrame + '\n' +
|
|
'cy=' + cy + '; cyNew=' + cyNew + '; this._dyFrame=' + this._dyFrame);
|
|
*/
|
|
|
|
// We cannot simply use the ResizeTo or ResizeBy methods because they don't
|
|
// work for dialog windows.
|
|
|
|
window.dialogWidth = cxNew;
|
|
window.dialogHeight = cyNew;
|
|
}
|
|
|
|
|
|
|
|
/*-------------------------------------------------------------------------
|
|
Purpose: Initialize the Dlg class
|
|
*/
|
|
function InitDlgClass()
|
|
{
|
|
// Create and discard an initial Dlg object for prototypes
|
|
new Dlg();
|
|
|
|
// Dlg Methods
|
|
Dlg.prototype.CalcMetrics = Dlg_CalcMetrics;
|
|
Dlg.prototype.Resize = Dlg_Resize;
|
|
Dlg.prototype.CxToEms = Dlg_CxToEms;
|
|
Dlg.prototype.CyToEms = Dlg_CyToEms;
|
|
}
|
|
|
|
|
|
|