quadrilateralcowboy/tools/common/AlphaPopup.cpp
2020-06-12 14:06:25 -07:00

342 lines
9.5 KiB
C++

/*
===========================================================================
Doom 3 GPL Source Code
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).
Doom 3 Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Doom 3 Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
#include "../../idlib/precompiled.h"
#pragma hdrstop
#include "../../sys/win32/win_local.h"
#include "ColorButton.h"
#include "MaskEdit.h"
#include "../../sys/win32/rc/guied_resource.h"
static HHOOK gAlphaHook = NULL;
static HWND gAlphaDlg = NULL;
/*
================
AlphaSlider_DrawArrow
Draws the arrow under alpha slider
================
*/
static void AlphaSlider_DrawArrow ( HDC hDC, RECT* pRect, COLORREF color )
{
POINT ptsArrow[3];
ptsArrow[0].x = pRect->left;
ptsArrow[0].y = pRect->bottom;
ptsArrow[1].x = (pRect->left + pRect->right)/2;
ptsArrow[1].y = pRect->top;
ptsArrow[2].x = pRect->right;
ptsArrow[2].y = pRect->bottom;
HBRUSH arrowBrush = CreateSolidBrush ( color );
HPEN arrowPen = CreatePen ( PS_SOLID, 1, color );
HGDIOBJ oldBrush = SelectObject ( hDC, arrowBrush );
HGDIOBJ oldPen = SelectObject ( hDC, arrowPen );
SetPolyFillMode(hDC, WINDING);
Polygon(hDC, ptsArrow, 3);
SelectObject ( hDC, oldBrush );
SelectObject ( hDC, oldPen );
DeleteObject ( arrowBrush );
DeleteObject ( arrowPen );
}
/*
================
AlphaSlider_WndProc
Window procedure for the alpha slider control
================
*/
LRESULT CALLBACK AlphaSlider_WndProc ( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
{
switch ( msg )
{
case WM_LBUTTONDOWN:
{
RECT rClient;
float v;
GetClientRect ( hwnd, &rClient );
v = (float)((short)LOWORD(lParam)-5) / (float)(rClient.right - rClient.left - 10);
if ( v < 0 ) v = 0;
if ( v > 1.0f ) v = 1.0f;
SetWindowLong ( hwnd, GWL_USERDATA, MAKELONG(0x8000,(unsigned short)(255.0f * v)) );
InvalidateRect ( hwnd, NULL, FALSE );
SetCapture ( hwnd );
break;
}
case WM_MOUSEMOVE:
if ( LOWORD(GetWindowLong ( hwnd, GWL_USERDATA ) ) & 0x8000 )
{
RECT rClient;
float v;
GetClientRect ( hwnd, &rClient );
v = (float)((short)LOWORD(lParam)-5) / (float)(rClient.right - rClient.left - 10);
if ( v < 0 ) v = 0;
if ( v > 1.0f ) v = 1.0f;
SetWindowLong ( hwnd, GWL_USERDATA, MAKELONG(0x8000,(unsigned short)(255.0f * v)) );
InvalidateRect ( hwnd, NULL, FALSE );
}
break;
case WM_LBUTTONUP:
if ( LOWORD(GetWindowLong ( hwnd, GWL_USERDATA ) ) & 0x8000 )
{
RECT rClient;
float v;
GetClientRect ( hwnd, &rClient );
v = (float)((short)LOWORD(lParam)-5) / (float)(rClient.right - rClient.left - 10);
if ( v < 0 ) v = 0;
if ( v > 1.0f ) v = 1.0f;
SetWindowLong ( hwnd, GWL_USERDATA, MAKELONG(0x8000,(unsigned short)(255.0f * v)) );
InvalidateRect ( hwnd, NULL, FALSE );
ReleaseCapture ( );
SendMessage ( GetParent ( hwnd ), WM_COMMAND, MAKELONG(GetWindowLong (hwnd,GWL_ID),0), 0 );
}
break;
case WM_PAINT:
{
PAINTSTRUCT ps;
HDC hDC = BeginPaint ( hwnd, &ps );
RECT rDraw;
RECT rClient;
GetClientRect ( hwnd, &rClient );
// Setup the gradient rect
CopyRect ( &rDraw, &rClient );
rDraw.left += 5;
rDraw.right -= 5;
rDraw.bottom -= 6;
// Draw the gradient
int parts = 20;
RECT rColor;
float step = (float)(rDraw.right-rDraw.left) / (float)parts;
CopyRect ( &rColor, &rDraw );
for ( int i = 0; i < parts; i ++ )
{
float color = ((float)i / (float)parts) * 255.0f;
rColor.left = rDraw.left + i * step;
rColor.right = rColor.left + step + 1;
HBRUSH brush = CreateSolidBrush ( RGB((int)color,(int)color,(int)color) );
FillRect ( hDC, &rColor, brush );
DeleteObject ( brush );
}
// Draw a frame around the gradient
FrameRect (hDC, &rDraw, (HBRUSH)GetStockObject ( BLACK_BRUSH ) );
// Make sure the area below the graident is filled in
rClient.top = rDraw.bottom;
FillRect ( hDC, &rClient, GetSysColorBrush ( COLOR_3DFACE ) );
// Draw the thumb
RECT rThumb;
short s = HIWORD(GetWindowLong ( hwnd, GWL_USERDATA ));
float thumb = (float)(short)s;
thumb /= 255.0f;
thumb *= (float)(rDraw.right-rDraw.left);
rThumb.left = rDraw.left - 5 + thumb;
rThumb.right = rThumb.left + 10;
rThumb.top = rDraw.bottom + 1;
rThumb.bottom = rThumb.top + 5;
AlphaSlider_DrawArrow ( hDC, &rThumb, RGB(0,0,0) );
EndPaint ( hwnd, &ps );
return 0;
}
}
return DefWindowProc ( hwnd, msg, wParam, lParam );
}
/*
================
AlphaSelectDlg_GetMsgProc
Ensures normal dialog functions work in the alpha select dialog
================
*/
LRESULT FAR PASCAL AlphaSelectDlg_GetMsgProc(int nCode, WPARAM wParam, LPARAM lParam)
{
LPMSG lpMsg = (LPMSG) lParam;
if ( nCode >= 0 && PM_REMOVE == wParam )
{
// Don't translate non-input events.
if ( (lpMsg->message >= WM_KEYFIRST && lpMsg->message <= WM_KEYLAST) )
{
if ( IsDialogMessage( gAlphaDlg, lpMsg) )
{
// The value returned from this hookproc is ignored,
// and it cannot be used to tell Windows the message has been handled.
// To avoid further processing, convert the message to WM_NULL
// before returning.
lpMsg->message = WM_NULL;
lpMsg->lParam = 0;
lpMsg->wParam = 0;
}
}
}
return CallNextHookEx(gAlphaHook, nCode, wParam, lParam);
}
/*
================
AlphaSelectDlg_WndProc
Window procedure for the alpha select dialog
================
*/
INT_PTR CALLBACK AlphaSelectDlg_WndProc ( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
{
switch ( msg )
{
case WM_INITDIALOG:
{
int color;
gAlphaDlg = hwnd;
gAlphaHook = SetWindowsHookEx( WH_GETMESSAGE, AlphaSelectDlg_GetMsgProc, NULL, GetCurrentThreadId() );
color = GetRValue(ColorButton_GetColor ((HWND)lParam));
// The lParam for the alpha select dialog is the window handle of the button pressed
SetWindowLong ( hwnd, GWL_USERDATA, lParam );
// Subclass the alpha
SetWindowLong ( GetDlgItem ( hwnd, IDC_GUIED_ALPHASLIDER ), GWL_USERDATA, MAKELONG(0,color) );
// Numbers only on the edit box and start it with the current alpha value.
NumberEdit_Attach ( GetDlgItem ( hwnd, IDC_GUIED_ALPHA ) );
SetWindowText ( GetDlgItem ( hwnd, IDC_GUIED_ALPHA ), va("%.3f", ((float)color / 255.0f) ) );
break;
}
case WM_DESTROY:
UnhookWindowsHookEx( gAlphaHook );
ReleaseCapture ( );
gAlphaDlg = NULL;
break;
case WM_ACTIVATE:
if ( !LOWORD(wParam) )
{
EndDialog ( hwnd, 0 );
}
break;
case WM_COMMAND:
switch ( LOWORD(wParam) )
{
case IDC_GUIED_ALPHA:
{
char temp[64];
float value;
// Get the current text in the window and convert it to a float
GetDlgItemText ( hwnd, IDC_GUIED_ALPHA, temp, 64 );
value = atof ( temp );
if ( value < 0.0f )
{
value = 0.0f;
}
else if ( value > 1.0f )
{
value = 1.0f;
}
// Set the current alpha value in the slider
SetWindowLong ( GetDlgItem ( hwnd, IDC_GUIED_ALPHASLIDER ), GWL_USERDATA, MAKELONG(0,(255.0f * value)) );
break;
}
case IDC_GUIED_ALPHASLIDER:
case IDOK:
{
int color = (short)HIWORD(GetWindowLong ( GetDlgItem ( hwnd, IDC_GUIED_ALPHASLIDER ), GWL_USERDATA ));
ColorButton_SetColor ( (HWND)GetWindowLong ( hwnd, GWL_USERDATA ), RGB(color,color,color) );
EndDialog ( hwnd, 0 );
break;
}
case IDCANCEL:
EndDialog ( hwnd, 0 );
break;
}
break;
}
return FALSE;
}
/*
================
AlphaButton_OpenPopup
Opens the popup window under the alpha button
================
*/
void AlphaButton_OpenPopup ( HWND button )
{
RECT rWindow;
WNDCLASSEX wndClass;
HWND dlg;
// Make sure the alpha slider window class is registered
memset ( &wndClass, 0, sizeof(wndClass) );
wndClass.cbSize = sizeof(WNDCLASSEX);
wndClass.lpszClassName = "GUIED_ALPHASLIDER";
wndClass.lpfnWndProc = AlphaSlider_WndProc;
wndClass.hInstance = win32.hInstance;
RegisterClassEx ( &wndClass );
GetWindowRect ( button, &rWindow );
dlg = CreateDialogParam ( win32.hInstance, MAKEINTRESOURCE(IDD_GUIED_ALPHA), GetParent(button), AlphaSelectDlg_WndProc, (LPARAM)button );
SetWindowPos ( dlg, NULL, rWindow.left, rWindow.bottom + 1, 0, 0, SWP_NOSIZE|SWP_NOZORDER );
ShowWindow ( dlg, SW_SHOW );
UpdateWindow ( dlg );
SetFocus ( dlg );
}