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/*
Miranda IM: the free IM client for Microsoft* Windows*
Copyright 2000-2006 Miranda ICQ/IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.
This program 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 2
of the License, or (at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "commonheaders.h"
static HCURSOR hHandCursor;
struct HyperlinkWndData {
HFONT hFont;
HFONT hSetFont;
RECT rcText;
DWORD enableColor;
DWORD disableColor;
};
#define IM_MEASURETEXT (WM_USER+1)
#define HLK_INVALIDATE (WM_USER+2)
static LRESULT CALLBACK HyperlinkWndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
struct HyperlinkWndData *dat;
dat=(struct HyperlinkWndData*)GetWindowLong(hwnd,0);
switch(message) {
case WM_CREATE:
dat=(struct HyperlinkWndData*)mir_alloc(sizeof(struct HyperlinkWndData));
SetWindowLong(hwnd,0,(LONG)dat);
dat->hFont=NULL;
dat->hSetFont=NULL;
dat->enableColor=GetSysColor(COLOR_HOTLIGHT);
if(dat->enableColor==0 && GetLastError()!=ERROR_SUCCESS) dat->enableColor=RGB(0,0,255);
dat->disableColor=GetSysColor(COLOR_GRAYTEXT);
SendMessage(hwnd,IM_MEASURETEXT,0,0);
break;
case WM_LBUTTONDOWN:
{ POINT pt;
pt.x=(short)LOWORD(lParam); pt.y=(short)HIWORD(lParam);
if(PtInRect(&dat->rcText,pt))
SendMessage(GetParent(hwnd),WM_COMMAND,MAKEWPARAM(GetDlgCtrlID(hwnd),STN_CLICKED),(LPARAM)hwnd);
break;
}
case WM_SETFONT:
{ LOGFONT lf;
dat->hSetFont=(HFONT)wParam;
GetObject(dat->hSetFont,sizeof(lf),&lf);
lf.lfUnderline=1;
dat->hFont=CreateFontIndirect(&lf);
if(LOWORD(lParam)) SendMessage(hwnd,HLK_INVALIDATE,0,0);
SendMessage(hwnd,IM_MEASURETEXT,0,0);
break;
}
case WM_ERASEBKGND: return(1); break;
case HLK_INVALIDATE: // invalidate
{
RECT rcWnd;
POINT pt;
GetWindowRect(hwnd,&rcWnd);
pt.x = rcWnd.left;
pt.y = rcWnd.top;
ScreenToClient(GetParent(hwnd),&pt);
rcWnd.right = pt.x + (rcWnd.right-rcWnd.left);
rcWnd.bottom = pt.y + (rcWnd.bottom-rcWnd.top);
rcWnd.left = pt.x;
rcWnd.top = pt.y;
InvalidateRect(GetParent(hwnd),&rcWnd,TRUE);
break;
}
case WM_GETFONT:
return (LRESULT)dat->hSetFont;
case IM_MEASURETEXT:
{ char text[256];
GetWindowTextA(hwnd,text,SIZEOF(text));
lParam=(LPARAM)text;
//fall thru
case WM_SETTEXT:
{ HFONT hoFont;
SIZE textSize;
RECT rc;
HDC hdc1=GetDC(hwnd);
if(dat->hFont!=NULL) hoFont=(HFONT)SelectObject(hdc1,dat->hFont);
GetTextExtentPoint32(hdc1,(const TCHAR*)lParam,lstrlen((const TCHAR*)lParam),&textSize);
dat->rcText.top=0; dat->rcText.bottom=dat->rcText.top+textSize.cy;
GetClientRect(hwnd,&rc);
if(GetWindowLong(hwnd,GWL_STYLE)&SS_CENTER) dat->rcText.left=(rc.right-textSize.cx)/2;
else if(GetWindowLong(hwnd,GWL_STYLE)&SS_RIGHT) dat->rcText.left=rc.right-textSize.cx;
else dat->rcText.left=0;
dat->rcText.right=dat->rcText.left+textSize.cx;
if(dat->hFont!=NULL) SelectObject(hdc1,hoFont);
ReleaseDC(hwnd,hdc1);
SendMessage(hwnd,HLK_INVALIDATE,0,0);
break;
}}
case WM_SETCURSOR:
{ POINT pt;
GetCursorPos(&pt);
ScreenToClient(hwnd,&pt);
if(PtInRect(&dat->rcText,pt)) SetCursor(hHandCursor);
else SetCursor(LoadCursor(NULL,IDC_ARROW));
return TRUE;
}
case HLK_SETENABLECOLOUR:
if ((DWORD)wParam) dat->enableColor = (DWORD)wParam;
break;
case HLK_SETDISABLECOLOUR:
if ((DWORD)wParam) dat->disableColor = (DWORD)wParam;
break;
case WM_NCPAINT:
case WM_PAINT:
{
HFONT hoFont;
RECT rc;
TCHAR text[256];
int alignFlag;
DWORD textColour;
PAINTSTRUCT ps;
HDC hdc1=BeginPaint(hwnd,&ps);
if(IsWindowEnabled(hwnd)) {
hoFont=(HFONT)SelectObject(hdc1,dat->hFont);
textColour=dat->enableColor;
}
else {
hoFont=(HFONT)SelectObject(hdc1,dat->hSetFont);
textColour=dat->disableColor;
}
SetTextColor(hdc1,textColour);
SetBkMode(hdc1,TRANSPARENT);
if(GetWindowLong(hwnd,GWL_STYLE)&SS_CENTER) alignFlag=DT_CENTER;
else if(GetWindowLong(hwnd,GWL_STYLE)&SS_RIGHT) alignFlag=DT_RIGHT;
else alignFlag=DT_LEFT;
GetClientRect(hwnd,&rc);
GetWindowText(hwnd,text,SIZEOF(text));
DrawText(hdc1,text,-1,&rc,alignFlag|DT_NOPREFIX|DT_SINGLELINE|DT_TOP);
SelectObject(hdc1,hoFont);
EndPaint(hwnd,&ps);
break;
}
case WM_DESTROY:
if(dat->hFont!=NULL) DeleteObject(dat->hFont);
mir_free(dat); dat=NULL;
SetWindowLong(hwnd,0,(LONG)dat);
break;
}
return DefWindowProc(hwnd,message,wParam,lParam);
}
int InitHyperlink(void)
{
WNDCLASS wcl;
if(IsWinVer2000Plus()) hHandCursor=LoadCursor(NULL,IDC_HAND);
else hHandCursor=LoadCursor(GetModuleHandle(NULL),MAKEINTRESOURCE(IDC_HYPERLINKHAND));
wcl.lpfnWndProc=HyperlinkWndProc;
wcl.cbClsExtra=0;
wcl.cbWndExtra=sizeof(void*);
wcl.hInstance=GetModuleHandle(NULL);
wcl.hCursor=NULL;
wcl.lpszClassName=WNDCLASS_HYPERLINK;
wcl.hbrBackground=NULL;
wcl.hIcon=NULL;
wcl.lpszMenuName=NULL;
wcl.style=CS_HREDRAW|CS_VREDRAW|CS_GLOBALCLASS|CS_PARENTDC;
RegisterClass(&wcl);
return 0;
}
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