gecko-dev/cmd/winfe/fmrdonly.cpp
1998-03-28 02:44:41 +00:00

363 lines
10 KiB
C++
Executable File

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "stdafx.h"
#include "fmrdonly.h"
#include "odctrl.h"
#include "intl_csi.h"
// This file is dedicated to form type read only elements
// otherwise known as edit fields on windows and
// their implementation as requried by the XP layout
// library.
// Construction simply clears all members.
CFormReadOnly::CFormReadOnly()
{
// No widget yet.
m_pWidget = NULL;
}
// Destruction cleans out all members.
CFormReadOnly::~CFormReadOnly()
{
}
// How to set the LO form element.
// This may change during the lifetime of an instance, so use this
// to update all referencing values.
void CFormReadOnly::SetElement(LO_FormElementStruct *pFormElement)
{
// Call the base.
CFormElement::SetElement(pFormElement);
// Let the widget know the element.
if(m_pWidget) {
m_pWidget->SetContext(GetContext() ? GetContext()->GetContext() : NULL, GetElement());
}
}
// Set the owning context.
// Use this to determine what context we live in and how we should
// represent ourself (DC or window).
void CFormReadOnly::SetContext(CAbstractCX *pCX)
{
// Call the base.
CFormElement::SetContext(pCX);
// Have our widget update if present.
if(m_pWidget) {
m_pWidget->SetContext(GetContext() ? GetContext()->GetContext() : NULL, GetElement());
}
}
// Display the form element given the particular context we are in.
// Possibly only use a DC for representation, or have the
// window move.
void CFormReadOnly::DisplayFormElement(LTRB& Rect)
{
// Display only has meaning if our context is a device context.
if(GetContext() && GetContext()->IsDCContext()) {
// Further, need to detect how we're going to be drawing ourselves.
if(GetContext()->IsPureDCContext()) {
// Only works from a DC, needs a GDI drawing representation.
CDCCX *pDCCX = VOID2CX(GetContext(), CDCCX);
}
else if(GetContext()->IsWindowContext()) {
MoveWindow(m_pWidget->m_hWnd, Rect.left, Rect.top + EDIT_SPACE / 2);
}
else {
// Is undefined....
ASSERT(0);
}
}
// Call the base.
CFormElement::DisplayFormElement(Rect);
}
// Destroy the widget (window) implemenation of the form.
void CFormReadOnly::DestroyWidget()
{
// Get rid of the widget if around.
if(m_pWidget) {
m_pWidget->DestroyWindow();
delete m_pWidget;
m_pWidget = NULL;
}
}
// Create the widget (window) implementation of the form
// but DO NOT DISPLAY.
void CFormReadOnly::CreateWidget()
{
if(GetContext() && GetElement()) {
if(GetContext()->IsWindowContext() && VOID2CX(GetContext(), CPaneCX)->GetPane()) {
// Need a widget representation.
ASSERT(m_pWidget == NULL);
m_pWidget = new CODNetscapeEdit;
if(m_pWidget == NULL) {
return;
}
// Inform widget of context and element.
m_pWidget->SetContext(GetContext()->GetContext(), GetElement());
#ifdef XP_WIN16
// On 16 bits, we need to set the segment of the widget before creation.
HINSTANCE hSegment = GetSegment();
if(hSegment) {
m_pWidget->SetInstance(hSegment);
}
else {
delete m_pWidget;
m_pWidget = NULL;
return;
}
#endif
// The style of the widget to be created.
DWORD dwStyle = WS_CHILD | WS_BORDER | ES_LEFT | ES_AUTOHSCROLL | ES_READONLY;
// Create the widget, hidden, and with a bad size.
BOOL bCreate =
#ifdef XP_WIN32
m_pWidget->CreateEx(WS_EX_CLIENTEDGE,
_T("EDIT"),
NULL,
dwStyle,
1, 1, 0, 0,
VOID2CX(GetContext(), CPaneCX)->GetPane(),
(HMENU)GetDynamicControlID(),
NULL);
#else
m_pWidget->Create(dwStyle, CRect(1, 1, 0, 0),
CWnd::FromHandle(VOID2CX(GetContext(), CPaneCX)->GetPane()),
GetDynamicControlID());
#endif
if(!bCreate) {
delete m_pWidget;
m_pWidget = NULL;
return;
}
// Next, need to size the widget.
// Obtain a font.
// Measure some text.
CDC *pDC = m_pWidget->GetDC();
if(pDC) {
// Textmetrics won't work unless we specifically select the font.
CyaFont *pMyFont;
LO_TextAttr *text_attr = GetElement()->text_attr;
VOID2CX(GetContext(), CWinCX)->SelectNetscapeFont( pDC->GetSafeHdc(), GetTextAttr(), pMyFont );
// Text metrics won't work unless we select the font.
if (pMyFont) {
SetWidgetFont(pDC->GetSafeHdc(), m_pWidget->m_hWnd);
text_attr->FE_Data = pMyFont;
// Default length will be for "hi".
int32 lLength = 2;
// Now figure up the width and height we would like.
int32 lWidgetWidth = pMyFont->GetMaxWidth();
int32 lWidgetHeight = pMyFont->GetHeight() + pMyFont->GetHeight() / 2;
// See if we can get the minimal data.
if(GetElementMinimalData() && GetElementMinimalData()->value) {
// Use length of text, exactly.
char *pDefault = (char *)GetElementMinimalData()->value;
lLength = XP_STRLEN(pDefault);
SIZE csz;
CIntlWin::GetTextExtentPointWithCyaFont(pMyFont,
INTL_GetCSIWinCSID(LO_GetDocumentCharacterSetInfo(GetContext()->GetContext())),
pDC->GetSafeHdc(), pDefault, CASTINT(lLength), &csz);
// Use this width.
lWidgetWidth += csz.cx;
}
else {
// Use an average width.
lWidgetWidth += lLength * pMyFont->GetMeanWidth();
}
VOID2CX(GetContext(), CWinCX)->ReleaseNetscapeFont( pDC->GetSafeHdc(), pMyFont );
m_pWidget->MoveWindow(1, 1, CASTINT(lWidgetWidth), CASTINT(lWidgetHeight), FALSE);
m_pWidget->ReleaseDC(pDC);
}
else {
m_pWidget->ReleaseDC(pDC);
DestroyWidget();
return;
}
}
else {
// No DC, no widget.
DestroyWidget();
return;
}
}
else if(GetContext()->IsPureDCContext()) {
// Need a drawn representation.
}
}
}
// Copy the current data out of the layout struct into the form
// widget, or mark that you should represent using the current data.
void CFormReadOnly::UseCurrentData()
{
// Detect context type and do the right thing.
if(GetContext()) {
if(GetContext()->IsWindowContext()) {
// Need a widget.
if(m_pWidget) {
// Just set it to the value if present.
// No real concept of current or default data in a read only yet.
char *pData = NULL;
if(GetElementMinimalData()) {
pData = (char *)GetElementMinimalData()->value;
}
if(pData) {
// We have to SetContext to the widget before we SetWindowText
// Otherwise, the widget don't know what csid the text is.
m_pWidget->SetContext(GetContext()->GetContext(), GetElement());
m_pWidget->SetWindowText(pData);
}
}
}
else if(GetContext()->IsPureDCContext()) {
// Printing/metafile
}
}
}
// Copy the default data out of the layout struct into the form
// widget, or mark that you should represent using the default data.
void CFormReadOnly::UseDefaultData()
{
// Detect context type and do the right thing.
if(GetContext()) {
if(GetContext()->IsWindowContext()) {
// Need a widget.
if(m_pWidget) {
// Just set it to the value if present.
// No real concept of current or default data in a read only yet.
char *pData = NULL;
if(GetElementMinimalData()) {
pData = (char *)GetElementMinimalData()->value;
}
if(pData) {
// We have to SetContext to the widget before we SetWindowText
// Otherwise, the widget don't know what csid the text is.
m_pWidget->SetContext(GetContext()->GetContext(), GetElement());
m_pWidget->SetWindowText(pData);
}
}
}
else if(GetContext()->IsPureDCContext()) {
// Printing/metafile
}
}
}
// Fill in the layout size information in the layout struct regarding
// the dimensions of the widget.
void CFormReadOnly::FillSizeInfo()
{
// Detect context type and do the right thing.
if(GetContext() && GetElement()) {
if(GetContext()->IsWindowContext()) {
// Need a widget.
if(m_pWidget) {
// Determine our window position.
CRect crRect;
m_pWidget->GetWindowRect(crRect);
// Munge the coordinate a little for layout.
// We'll have to know how to decode this information
// in the display routine (by half).
GetElement()->width = crRect.Width();
GetElement()->height = crRect.Height() + EDIT_SPACE;
GetElement()->border_vert_space = EDIT_SPACE/2;
// Baseline needs text metric information.
GetElement()->baseline = GetElement()->height; // ugly default in case of failure below.
CDC *pDC = m_pWidget->GetDC();
if(pDC) {
// Need to specifically select the font before calling GetTextMetrics.
CyaFont *pMyFont;
VOID2CX(GetContext(), CPaneCX)->SelectNetscapeFont( pDC->GetSafeHdc(), GetTextAttr(), pMyFont );
if (pMyFont) {
SetWidgetFont(pDC->GetSafeHdc(), m_pWidget->m_hWnd);
GetElement()->baseline -= (pMyFont->GetHeight() / 2 + pMyFont->GetDescent()) / 2;
VOID2CX(GetContext(), CPaneCX)->ReleaseNetscapeFont( pDC->GetSafeHdc(), pMyFont );
m_pWidget->ReleaseDC(pDC);
}
else {
m_pWidget->ReleaseDC(pDC);
DestroyWidget();
return;
}
}
}
else {
// No widget, tell layout nothing.
GetElement()->width = 0;
GetElement()->height = 0;
GetElement()->baseline = 0;
}
}
else if(GetContext()->IsPureDCContext()) {
// Do some printing specific stuff here...
GetElement()->width = 0;
GetElement()->height = 0;
GetElement()->baseline = 0;
}
}
}
// Copy the current data out of the form element back into the
// layout struct.
void CFormReadOnly::UpdateCurrentData()
{
// There is literally no data to update for this element type right now.
// Perhaps one day....
if(GetContext()) {
if(GetContext()->IsWindowContext()) {
// Need a widget.
if(m_pWidget) {
}
else {
}
}
else if(GetContext()->IsPureDCContext()) {
// Printing/metafile
}
}
}
HWND CFormReadOnly::GetRaw()
{
return(m_pWidget ? m_pWidget->m_hWnd : NULL);
}