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

411 lines
14 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 "fmradio.h"
// This file is dedicated to form type radio elements
// otherwise known as list boxes on windows and
// their implementation as requried by the XP layout
// library.
// Construction simply clears all members.
CFormRadio::CFormRadio()
{
// No widget.
m_pWidget = NULL;
}
// Destruction cleans out all members.
CFormRadio::~CFormRadio()
{
}
// 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 CFormRadio::SetElement(LO_FormElementStruct *pFormElement)
{
// Call the base.
CFormElement::SetElement(pFormElement);
// Update the widget if present for correct callbacks.
if(m_pWidget) {
m_pWidget->RegisterForm(GetElement());
}
}
// Set the owning context.
// Use this to determine what context we live in and how we should
// represent ourself (DC or window).
void CFormRadio::SetContext(CAbstractCX *pCX)
{
// Call the base.
CFormElement::SetContext(pCX);
// Update the widget if present for correct callbacks.
if(m_pWidget) {
m_pWidget->RegisterContext(GetContext() ? GetContext()->GetContext() : NULL);
}
}
// Display the form element given the particular context we are in.
// Possibly only use a DC for representation, or have the
// window move.
void CFormRadio::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);
HDC pDC = pDCCX->GetContextDC();
if(pDC && Rect.Width() && Rect.Height()) {
// Adjust the rect some (reverse what we did earlier for layout).
RECT crRect;
::SetRect(&crRect, CASTINT(Rect.left), CASTINT(Rect.top),
CASTINT(Rect.right), CASTINT(Rect.bottom));
::InflateRect(&crRect, CASTINT(-1 * pDCCX->Pix2TwipsX(BUTTON_FUDGE) / 2),
CASTINT(-1 * pDCCX->Pix2TwipsY(BUTTON_FUDGE) / 2));
// Figure out what type we're about to draw, and its current state.
BOOL bRadio = FALSE; // Radio or checkbox.
BOOL bChecked = FALSE; // State, checked or not.
if(GetElementMinimalData()) {
switch(GetElementMinimalData()->type) {
case FORM_TYPE_RADIO:
bRadio = TRUE;
break;
case FORM_TYPE_CHECKBOX:
bRadio = FALSE;
break;
default: // Unknown!
ASSERT(0);
return;
}
}
if(GetElementToggleData()) {
bChecked = GetElementToggleData()->toggled ? TRUE : FALSE;
}
// Are we drawing a circle or a square?
if(bRadio) {
TRY {
// Circle.
// Select the outer pen.
HPEN hpOuter = ::CreatePen(PS_SOLID, CASTINT(pDCCX->Pix2TwipsY(1)), pDCCX->ResolveLightLineColor());
HPEN hOldPen = (HPEN)::SelectObject(pDC, hpOuter);
if(hOldPen) {
// Draw an ellipse.
::Ellipse(pDC, crRect.left, crRect.top, crRect.right, crRect.bottom);
// Select the inner pen.
HPEN hpInner = ::CreatePen(PS_SOLID, CASTINT(pDCCX->Pix2TwipsY(1)), pDCCX->ResolveDarkLineColor());
::SelectObject(pDC, hpInner);
::InflateRect(&crRect, CASTINT(-1 * pDCCX->Pix2TwipsX(1)), CASTINT(-1 * pDCCX->Pix2TwipsY(1)));
::Ellipse(pDC, crRect.left, crRect.top, crRect.right, crRect.bottom);
// Are we drawing a circle in the radio button (checked?)
if(bChecked) {
HPEN hpBlack = CreatePen(PS_SOLID, CASTINT(pDCCX->Pix2TwipsY(1)), RGB(0, 0, 0));
::SelectObject(pDC, hpBlack);
// Get the brush with which to fill the ellipse this time around.
HBRUSH hbBlack = ::CreateSolidBrush(RGB(0, 0, 0));
HBRUSH hOldBrush = (HBRUSH)::SelectObject(pDC, hbBlack);
::InflateRect(&crRect, CASTINT(-1 * pDCCX->Pix2TwipsX(3)), CASTINT(-1 * pDCCX->Pix2TwipsY(3)));
::Ellipse(pDC, crRect.left, crRect.top, crRect.right, crRect.bottom);
// Restore the brush.
if(hOldBrush) {
::SelectObject(pDC, hOldBrush);
}
VERIFY(::DeleteObject( hbBlack ));
VERIFY(::DeleteObject( hpBlack ));
}
// Restore original pen.
::SelectObject(pDC, hOldPen);
VERIFY(::DeleteObject( hpOuter ));
VERIFY(::DeleteObject( hpInner ));
}
}
CATCH(CException, e) {
// Caught some pen/brush exception, do nothing special.
}
END_CATCH
}
else {
// Square.
pDCCX->Display3DBox(LTRB(crRect.left, crRect.top, crRect.right, crRect.bottom),
pDCCX->ResolveLightLineColor(), pDCCX->ResolveDarkLineColor(), pDCCX->Pix2TwipsY(2));
// Are we checking it?
if(bChecked) {
::InflateRect(&crRect, CASTINT(-1 * pDCCX->Pix2TwipsX(2)), CASTINT(-1 * pDCCX->Pix2TwipsY(2)));
TRY {
HPEN hpBlack = ::CreatePen(PS_SOLID, CASTINT(pDCCX->Pix2TwipsY(2)), RGB(0, 0, 0));
HPEN hOldPen = (HPEN)::SelectObject(pDC, hpBlack);
if(hOldPen) {
// Draw a check.
int width = crRect.right - crRect.left;
int height = crRect.bottom - crRect.top;
::MoveToEx(pDC, crRect.left + width / 4, crRect.top + height / 2, NULL);
::LineTo(pDC, crRect.left + width / 3, crRect.top + 3 * height / 4);
::LineTo(pDC, crRect.left + 3 * width / 4, crRect.top + height / 4);
// Restore old pen.
::SelectObject(pDC, hOldPen);
VERIFY(::DeleteObject(hpBlack));
}
}
CATCH(CException, e) {
// Caught some pen exeption, do nothing special here.
}
END_CATCH
}
}
pDCCX->ReleaseContextDC(pDC);
}
}
else if(GetContext()->IsWindowContext()) {
// Is a window, needs a widget/window representation.
MoveWindow(m_pWidget->m_hWnd, Rect.left + BUTTON_FUDGE / 2,
Rect.top + BUTTON_FUDGE / 2);
}
else {
// Is undefined....
ASSERT(0);
}
}
// Call the base.
CFormElement::DisplayFormElement(Rect);
}
// Destroy the widget (window) implemenation of the form.
void CFormRadio::DestroyWidget()
{
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 CFormRadio::CreateWidget()
{
if(GetContext() && GetElement()) {
if(GetContext()->IsWindowContext() && VOID2CX(GetContext(), CPaneCX)->GetPane()) {
// For a window context, allocate a widget.
ASSERT(m_pWidget == NULL);
m_pWidget = new CNetscapeButton(GetContext()->GetContext(), GetElement());
if(m_pWidget == NULL) {
return;
}
// Figure the window style.
DWORD dwStyle = WS_CHILD;
if(GetElementMinimalData()) {
switch(GetElementMinimalData()->type) {
case FORM_TYPE_RADIO:
dwStyle |= BS_RADIOBUTTON;
break;
case FORM_TYPE_CHECKBOX:
dwStyle |= BS_CHECKBOX; // bug 49682 removed AUTO, see button.cpp click()
break;
default: // Unknown!
ASSERT(0);
delete m_pWidget;
m_pWidget = NULL;
return;
}
}
else {
// Must know the type.
delete m_pWidget;
m_pWidget = NULL;
return;
}
BOOL bCreate = m_pWidget->Create(NULL,
dwStyle,
CRect(0, 0, 1, 1),
CWnd::FromHandle(VOID2CX(GetContext(), CPaneCX)->GetPane()),
GetDynamicControlID());
if(!bCreate) {
delete m_pWidget;
m_pWidget = NULL;
return;
}
// Size the thing.
// Buttons are 7 x 7 in dialog units.
// Perform a conversion to pixels.
LONG lUnits = GetDialogBaseUnits();
int32 lWidth = 7 * LOWORD(lUnits) / 4;
int32 lHeight = 7 * HIWORD(lUnits) / 8;
// Move it.
m_pWidget->MoveWindow(1, 1, CASTINT(lWidth), CASTINT(lHeight), FALSE);
}
else if(GetContext()->IsPureDCContext()) {
}
}
}
// Copy the current data out of the layout struct into the form
// widget, or mark that you should represent using the current data.
void CFormRadio::UseCurrentData()
{
// Detect context type.
if(GetContext()) {
if(GetContext()->IsWindowContext()) {
// Only continue if there's a widget at all.
if(m_pWidget) {
int iChecked = 0; // Sad default.
if(GetElementToggleData()) {
iChecked = GetElementToggleData()->toggled ? 1 : 0;
}
// Update the widget.
if(m_pWidget->GetCheck() != iChecked) {
m_pWidget->SetCheck(iChecked);
}
}
}
else if(GetContext()->IsPureDCContext()) {
// Current data already reflected in toggle data.
}
}
}
// Copy the default data out of the layout struct into the form
// widget, or mark that you should represent using the default data.
void CFormRadio::UseDefaultData()
{
// Detect context type.
if(GetContext()) {
if(GetContext()->IsWindowContext()) {
// Only continue if there's a widget at all.
if(m_pWidget) {
int iChecked = 0; // Sad default.
if(GetElementToggleData()) {
iChecked = GetElementToggleData()->default_toggle ? 1 : 0;
}
// Update the widget.
m_pWidget->SetCheck(iChecked);
}
}
else if(GetContext()->IsPureDCContext()) {
// Set current to default.
if(GetElementToggleData()) {
GetElementToggleData()->toggled = GetElementToggleData()->default_toggle;
}
}
}
}
// Fill in the layout size information in the layout struct regarding
// the dimensions of the widget.
void CFormRadio::FillSizeInfo()
{
// Detect context type.
if(GetContext() && GetElement()) {
if(GetContext()->IsWindowContext()) {
// Only continue if there's a widget at all.
if(m_pWidget) {
// Determine out window position.
CRect crWidget;
m_pWidget->GetWindowRect(crWidget);
// Munge it for layout.
// We'll need to know how to undo this
// in the display routine.
GetElement()->width = crWidget.Width() + BUTTON_FUDGE;
GetElement()->height = crWidget.Height() + BUTTON_FUDGE;
GetElement()->baseline = GetElement()->height - (BUTTON_FUDGE - 1);
GetElement()->border_vert_space = BUTTON_FUDGE/2;
GetElement()->border_horiz_space = BUTTON_FUDGE/2;
}
else {
GetElement()->width = 0;
GetElement()->height = 0;
GetElement()->baseline = 0;
}
}
else if(GetContext()->IsPureDCContext()) {
// Do some printing specific stuff here...
CDCCX *pDCCX = VOID2CX(GetContext(), CDCCX);
// Size the thing.
// Buttons are 7 x 7 in dialog units.
// Perform a conversion to twips/whatever.
LONG lUnits = GetDialogBaseUnits();
int32 lWidth = 7 * LOWORD(lUnits) / 4;
int32 lHeight = 7 * HIWORD(lUnits) / 8;
int32 lButtonFudge = pDCCX->Pix2TwipsY(BUTTON_FUDGE);
lWidth = pDCCX->Pix2TwipsX(lWidth);
lHeight = pDCCX->Pix2TwipsX(lHeight);
GetElement()->width = lWidth + lButtonFudge;
GetElement()->height = lHeight + lButtonFudge;
GetElement()->baseline = GetElement()->height - (lButtonFudge - pDCCX->Pix2TwipsY(1));
}
}
}
// Copy the current data out of the form element back into the
// layout struct.
void CFormRadio::UpdateCurrentData()
{
// Detect context type.
if(GetContext()) {
if(GetContext()->IsWindowContext()) {
// Only continue if there's a widget at all.
if(m_pWidget && ::IsWindow(m_pWidget->GetSafeHwnd())) {
if(GetElementToggleData()) {
// Update layout data as BOOL.
GetElementToggleData()->toggled = m_pWidget->GetCheck() ? TRUE : FALSE;
}
}
}
else if(GetContext()->IsPureDCContext()) {
// Nothing to update.
}
}
}
HWND CFormRadio::GetRaw()
{
return(m_pWidget ? m_pWidget->m_hWnd : NULL);
}