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/*
Miranda IM: the free IM client for Microsoft* Windows*
Copyright 2000-12 Miranda IM, 2012-13 Miranda NG 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 "..\..\core\commonheaders.h"
struct HyperlinkWndData {
HFONT hEnableFont, hDisableFont;
RECT rcText;
COLORREF enableColor, disableColor, focusColor;
BYTE flags; /* see HLKF_* */
};
/* flags */
#define HLKF_HASENABLECOLOR 0x1 /* dat->enableColor is not system default */
#define HLKF_HASDISABLECOLOR 0x2 /* dat->disableColor is not system default */
/* internal messages */
#define HLK_MEASURETEXT (WM_USER+1)
#define HLK_INVALIDATE (WM_USER+2)
static LRESULT CALLBACK HyperlinkWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
struct HyperlinkWndData *dat = (struct HyperlinkWndData*)GetWindowLongPtr(hwnd, 0);
switch(msg) {
case WM_NCCREATE:
dat = (struct HyperlinkWndData*)mir_calloc(sizeof(struct HyperlinkWndData));
if (dat == NULL) return FALSE; /* fail creation */
SetWindowLongPtr(hwnd, 0, (LONG_PTR)dat); /* always succeeds */
/* fall thru */
case WM_SYSCOLORCHANGE:
if ( !(dat->flags&HLKF_HASENABLECOLOR)) {
if (GetSysColorBrush(COLOR_HOTLIGHT) == NULL) dat->enableColor = RGB(0, 0, 255);
else dat->enableColor = GetSysColor(COLOR_HOTLIGHT);
dat->focusColor = RGB(GetRValue(dat->enableColor) / 2, GetGValue(dat->enableColor) / 2, GetBValue(dat->enableColor) / 2);
}
if ( !(dat->flags&HLKF_HASDISABLECOLOR))
dat->disableColor = GetSysColor(COLOR_GRAYTEXT);
break;
case WM_SETFOCUS:
case WM_KILLFOCUS:
RedrawWindow(hwnd, NULL, NULL, RDW_INVALIDATE);
break;
case WM_MOUSEACTIVATE:
SetFocus(hwnd);
return MA_ACTIVATE;
case WM_GETDLGCODE:
{
if (lParam)
{
MSG *msg = (MSG *) lParam;
if (msg->message == WM_KEYDOWN)
{
if (msg->wParam == VK_TAB)
return 0;
if (msg->wParam == VK_ESCAPE)
return 0;
} else
if (msg->message == WM_CHAR)
{
if (msg->wParam == '\t')
return 0;
if (msg->wParam == 27)
return 0;
}
}
return DLGC_WANTMESSAGE;
}
case WM_KEYDOWN:
{
switch (wParam)
{
case VK_SPACE:
case VK_RETURN:
SendMessage(GetParent(hwnd), WM_COMMAND, MAKEWPARAM(GetDlgCtrlID(hwnd), STN_CLICKED), (LPARAM)hwnd);
break;
}
return 0;
}
case WM_LBUTTONDOWN:
{ POINT pt;
POINTSTOPOINT(pt, MAKEPOINTS(lParam));
if ( !PtInRect(&dat->rcText, pt)) break;
SendMessage(GetParent(hwnd), WM_COMMAND, MAKEWPARAM(GetDlgCtrlID(hwnd), STN_CLICKED), (LPARAM)hwnd);
return 0;
}
case WM_SETFONT:
{ LOGFONT lf;
HFONT hFont;
if ((HFONT)wParam == NULL) { /* use default system color */
dat->hEnableFont = dat->hDisableFont = NULL;
return 0;
}
if (GetObject((HFONT)wParam, sizeof(lf), &lf)) {
lf.lfUnderline = 1;
hFont = CreateFontIndirect(&lf);
if (hFont != NULL) {
dat->hEnableFont = hFont;
dat->hDisableFont = (HFONT)wParam;
if (LOWORD(lParam)) SendMessage(hwnd, HLK_INVALIDATE, 0, 0);
SendMessage(hwnd, HLK_MEASURETEXT, 0, 0);
}
}
return 0;
}
case WM_ERASEBKGND:
return TRUE;
case WM_ENABLE:
case HLK_INVALIDATE:
{ RECT rcWnd;
POINT pt;
HWND hwndParent;
if ( !GetWindowRect(hwnd, &rcWnd)) break;
pt.x = rcWnd.left;
pt.y = rcWnd.top;
hwndParent = GetParent(hwnd);
if (hwndParent == NULL) hwndParent = hwnd;
if ( !ScreenToClient(hwndParent, &pt)) break;
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(hwndParent, &rcWnd, TRUE);
return 0;
}
case WM_GETFONT:
return (LRESULT)dat->hDisableFont;
case WM_CREATE:
case HLK_MEASURETEXT:
{ TCHAR szText[256];
if ( !GetWindowText(hwnd, szText, SIZEOF(szText))) return 0;
lParam = (LPARAM)szText;
/* fall thru */
case WM_SETTEXT:
{ HFONT hPrevFont = NULL;
SIZE textSize;
RECT rc;
HDC hdc;
LONG style;
BOOL fMeasured = FALSE;
hdc = GetDC(hwnd);
if (hdc == NULL) return 0; /* text change failed */
if (dat->hEnableFont != NULL) hPrevFont = (HFONT)SelectObject(hdc, dat->hEnableFont);
if (dat->hEnableFont == NULL || hPrevFont != NULL) /* select failed? */
if (GetTextExtentPoint32(hdc, (TCHAR*)lParam, lstrlen((TCHAR*)lParam), &textSize))
if (GetClientRect(hwnd, &rc)) {
dat->rcText.top = 0;
dat->rcText.bottom = dat->rcText.top+textSize.cy;
style = GetWindowLongPtr(hwnd, GWL_STYLE);
if (style&SS_CENTER) dat->rcText.left = (rc.right-textSize.cx)/2;
else if (style&SS_RIGHT) dat->rcText.left = rc.right-textSize.cx;
else dat->rcText.left = 0;
dat->rcText.right = dat->rcText.left+textSize.cx;
fMeasured = TRUE;
}
if (dat->hEnableFont != NULL && hPrevFont != NULL) SelectObject(hdc, hPrevFont);
ReleaseDC(hwnd, hdc);
if ( !fMeasured) return 0; /* text change failed */
SendMessage(hwnd, HLK_INVALIDATE, 0, 0);
break;
}}
case WM_SETCURSOR:
{ POINT pt;
HCURSOR hCursor;
if ( !GetCursorPos(&pt)) return FALSE;
if ( !ScreenToClient(hwnd, &pt)) return FALSE;
if (PtInRect(&dat->rcText, pt)) {
hCursor = (HCURSOR)GetClassLongPtr(hwnd, GCLP_HCURSOR);
if (hCursor == NULL) hCursor = LoadCursor(NULL, IDC_HAND); /* Win2000+ */
}
else hCursor = LoadCursor(NULL, IDC_ARROW);
SetCursor(hCursor);
return TRUE;
}
case HLK_SETENABLECOLOUR:
{ COLORREF prevColor = dat->enableColor;
dat->enableColor = (COLORREF)wParam;
dat->focusColor = RGB(GetRValue(dat->enableColor) / 2, GetGValue(dat->enableColor) / 2, GetBValue(dat->enableColor) / 2);
dat->flags|=HLKF_HASENABLECOLOR;
return (LRESULT)prevColor;
}
case HLK_SETDISABLECOLOUR:
{ COLORREF prevColor = dat->disableColor;
dat->disableColor = (COLORREF)wParam;
dat->flags|=HLKF_HASDISABLECOLOR;
return (LRESULT)prevColor;
}
case WM_NCPAINT:
return 0;
case WM_PAINT:
{ HFONT hPrevFont;
RECT rc;
TCHAR szText[256];
UINT alignFlag;
COLORREF textColor;
PAINTSTRUCT ps;
HDC hdc;
hdc = BeginPaint(hwnd, &ps);
if (hdc != NULL) {
if (IsWindowEnabled(hwnd)) {
hPrevFont = (HFONT)SelectObject(hdc, dat->hEnableFont);
textColor = (GetFocus() == hwnd) ? dat->focusColor : dat->enableColor;
} else {
hPrevFont = (HFONT)SelectObject(hdc, dat->hDisableFont);
textColor = dat->disableColor;
}
if (GetClientRect(hwnd, &rc) && GetWindowText(hwnd, szText, SIZEOF(szText))) {
BOOL fSmoothing;
UINT fSmoothingType;
SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &fSmoothing, 0);
SystemParametersInfo(SPI_GETFONTSMOOTHINGTYPE, 0, &fSmoothingType, 0);
if (fSmoothing && fSmoothingType == FE_FONTSMOOTHINGCLEARTYPE)
DrawThemeParentBackground(hwnd, hdc, &rc);
SetBkMode(hdc, TRANSPARENT);
SetTextColor(hdc, textColor);
alignFlag = (GetWindowLongPtr(hwnd, GWL_STYLE)&(SS_CENTER|SS_RIGHT|SS_LEFT));
DrawText(hdc, szText, -1, &rc, alignFlag|DT_NOPREFIX|DT_SINGLELINE|DT_TOP);
}
if (hPrevFont != NULL) SelectObject(hdc, hPrevFont);
EndPaint(hwnd, &ps);
}
return 0;
}
case WM_NCDESTROY:
if (dat->hEnableFont != NULL) DeleteObject(dat->hEnableFont);
mir_free(dat);
break;
}
return DefWindowProc(hwnd, msg, wParam, lParam);
}
int InitHyperlink(void)
{
WNDCLASS wcl;
wcl.lpfnWndProc = HyperlinkWndProc;
wcl.cbClsExtra = 0;
wcl.cbWndExtra = sizeof(struct HyperlinkWndData*);
wcl.hInstance = hInst;
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); /* automatically unregistered on exit */
return 0;
}
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