mirror of
https://github.com/reactos/reactos.git
synced 2024-07-03 11:14:33 +00:00
519 lines
13 KiB
C++
519 lines
13 KiB
C++
/*
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* PROJECT: PAINT for ReactOS
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* LICENSE: LGPL-2.0-or-later (https://spdx.org/licenses/LGPL-2.0-or-later)
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* PURPOSE: Text editor and font chooser for the text tool
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* COPYRIGHT: Copyright 2015 Benedikt Freisen <b.freisen@gmx.net>
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*/
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#include "precomp.h"
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#define CXY_GRIP 3
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CTextEditWindow textEditWindow;
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/* FUNCTIONS ********************************************************/
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CTextEditWindow::CTextEditWindow()
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: m_hFont(NULL)
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, m_hFontZoomed(NULL)
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{
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SetRectEmpty(&m_rc);
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}
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INT CTextEditWindow::DoHitTest(RECT& rc, POINT pt)
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{
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switch (getSizeBoxHitTest(pt, &rc))
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{
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case HIT_NONE: return HTNOWHERE;
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case HIT_UPPER_LEFT: return HTTOPLEFT;
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case HIT_UPPER_CENTER: return HTTOP;
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case HIT_UPPER_RIGHT: return HTTOPRIGHT;
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case HIT_MIDDLE_LEFT: return HTLEFT;
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case HIT_MIDDLE_RIGHT: return HTRIGHT;
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case HIT_LOWER_LEFT: return HTBOTTOMLEFT;
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case HIT_LOWER_CENTER: return HTBOTTOM;
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case HIT_LOWER_RIGHT: return HTBOTTOMRIGHT;
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case HIT_BORDER: return HTCAPTION; // Enable drag move
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case HIT_INNER: return HTCLIENT;
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}
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return HTNOWHERE;
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}
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void CTextEditWindow::DrawGrip(HDC hDC, RECT& rc)
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{
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drawSizeBoxes(hDC, &rc, TRUE, NULL);
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}
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void CTextEditWindow::FixEditPos(LPCWSTR pszOldText)
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{
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CStringW szText;
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GetWindowText(szText);
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RECT rcParent;
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::GetWindowRect(m_hwndParent, &rcParent);
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CRect rc, rcWnd, rcText;
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GetWindowRect(&rcWnd);
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rcText = rcWnd;
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HDC hDC = GetDC();
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if (hDC)
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{
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SelectObject(hDC, m_hFontZoomed);
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TEXTMETRIC tm;
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GetTextMetrics(hDC, &tm);
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szText += L"x"; // This is a trick to enable the g_ptEnd newlines
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const UINT uFormat = DT_LEFT | DT_TOP | DT_EDITCONTROL | DT_NOPREFIX | DT_NOCLIP |
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DT_EXPANDTABS | DT_WORDBREAK;
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DrawTextW(hDC, szText, -1, &rcText, uFormat | DT_CALCRECT);
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if (tm.tmDescent > 0)
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rcText.bottom += tm.tmDescent;
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ReleaseDC(hDC);
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}
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UnionRect(&rc, &rcText, &rcWnd);
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::MapWindowPoints(NULL, m_hwndParent, (LPPOINT)&rc, 2);
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rcWnd = rc;
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::GetClientRect(m_hwndParent, &rcParent);
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rc.IntersectRect(&rcParent, &rcWnd);
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MoveWindow(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, FALSE);
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DefWindowProc(WM_HSCROLL, SB_LEFT, 0);
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DefWindowProc(WM_VSCROLL, SB_TOP, 0);
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::InvalidateRect(m_hwndParent, &rc, TRUE);
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}
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LRESULT CTextEditWindow::OnChar(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (wParam == VK_TAB)
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return 0; // FIXME: Tabs
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CStringW szText;
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GetWindowText(szText);
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LRESULT ret = DefWindowProc(nMsg, wParam, lParam);
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FixEditPos(szText);
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return ret;
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}
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LRESULT CTextEditWindow::OnKeyDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (wParam == VK_ESCAPE)
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{
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toolsModel.OnEndDraw(TRUE);
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return 0;
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}
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CStringW szText;
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GetWindowText(szText);
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LRESULT ret = DefWindowProc(nMsg, wParam, lParam);
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FixEditPos(szText);
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return ret;
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}
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LRESULT CTextEditWindow::OnLButtonDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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LRESULT ret = DefWindowProc(nMsg, wParam, lParam);
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DefWindowProc(WM_HSCROLL, SB_LEFT, 0);
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DefWindowProc(WM_VSCROLL, SB_TOP, 0);
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return ret;
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}
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LRESULT CTextEditWindow::OnEraseBkGnd(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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HDC hDC = (HDC)wParam;
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if (!toolsModel.IsBackgroundTransparent())
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{
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RECT rc;
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GetClientRect(&rc);
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HBRUSH hbr = CreateSolidBrush(paletteModel.GetBgColor());
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FillRect(hDC, &rc, hbr);
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DeleteObject(hbr);
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}
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::SetTextColor(hDC, paletteModel.GetFgColor());
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return TRUE;
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}
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LRESULT CTextEditWindow::OnPaint(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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RECT rc;
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GetClientRect(&rc);
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DefWindowProc(nMsg, wParam, lParam);
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HDC hDC = GetDC();
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if (hDC)
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{
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DrawGrip(hDC, rc);
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ReleaseDC(hDC);
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}
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return 0;
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}
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LRESULT CTextEditWindow::OnNCPaint(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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CRect rc;
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GetWindowRect(&rc);
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HDC hDC = GetDCEx(NULL, DCX_WINDOW | DCX_PARENTCLIP);
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if (hDC)
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{
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rc.OffsetRect(-rc.left, -rc.top);
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DrawGrip(hDC, rc);
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ReleaseDC(hDC);
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}
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return 0;
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}
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LRESULT CTextEditWindow::OnNCCalcSize(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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return 0; // No frame.
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}
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LRESULT CTextEditWindow::OnNCHitTest(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
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RECT rc;
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GetWindowRect(&rc);
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return DoHitTest(rc, pt);
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}
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LRESULT CTextEditWindow::OnSetCursor(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (CWaitCursor::IsWaiting())
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{
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bHandled = FALSE;
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return 0;
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}
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UINT nHitTest = LOWORD(lParam);
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if (nHitTest == HTCAPTION)
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{
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::SetCursor(::LoadCursorW(NULL, (LPCWSTR)IDC_SIZEALL)); // Enable drag move
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return FALSE;
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}
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return DefWindowProc(nMsg, wParam, lParam);
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}
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LRESULT CTextEditWindow::OnMove(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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LRESULT ret = DefWindowProc(nMsg, wParam, lParam);
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return ret;
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}
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LRESULT CTextEditWindow::OnSize(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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LRESULT ret = DefWindowProc(nMsg, wParam, lParam);
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RECT rc;
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GetClientRect(&rc);
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SendMessage(EM_SETRECTNP, 0, (LPARAM)&rc);
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SendMessage(EM_SETMARGINS, EC_LEFTMARGIN | EC_RIGHTMARGIN, MAKELONG(0, 0));
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return ret;
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}
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// Hack: Use DECLARE_WND_SUPERCLASS instead!
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HWND CTextEditWindow::Create(HWND hwndParent)
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{
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m_hwndParent = hwndParent;
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const DWORD style = ES_LEFT | ES_MULTILINE | ES_WANTRETURN | ES_AUTOVSCROLL |
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WS_CHILD | WS_THICKFRAME;
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HWND hwnd = ::CreateWindowEx(0, WC_EDIT, NULL, style, 0, 0, 0, 0,
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hwndParent, NULL, g_hinstExe, NULL);
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if (hwnd)
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{
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#undef SubclassWindow // Don't use this macro
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SubclassWindow(hwnd);
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UpdateFont();
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PostMessage(WM_SIZE, 0, 0);
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}
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return m_hWnd;
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}
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void CTextEditWindow::DoFillBack(HWND hwnd, HDC hDC)
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{
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if (toolsModel.IsBackgroundTransparent())
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return;
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RECT rc;
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SendMessage(EM_GETRECT, 0, (LPARAM)&rc);
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MapWindowPoints(hwnd, (LPPOINT)&rc, 2);
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HBRUSH hbr = CreateSolidBrush(paletteModel.GetBgColor());
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FillRect(hDC, &rc, hbr);
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DeleteObject(hbr);
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}
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LRESULT CTextEditWindow::OnCreate(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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UpdateFont();
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return 0;
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}
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LRESULT CTextEditWindow::OnClose(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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ShowWindow(SW_HIDE);
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if (m_hFont)
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{
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DeleteObject(m_hFont);
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m_hFont = NULL;
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}
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if (m_hFontZoomed)
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{
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DeleteObject(m_hFontZoomed);
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m_hFontZoomed = NULL;
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}
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return 0;
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}
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void CTextEditWindow::InvalidateEditRect()
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{
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RECT rc;
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GetWindowRect(&rc);
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::MapWindowPoints(NULL, m_hwndParent, (LPPOINT)&rc, 2);
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::InvalidateRect(m_hwndParent, &rc, TRUE);
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GetClientRect(&rc);
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MapWindowPoints(canvasWindow, (LPPOINT)&rc, 2);
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canvasWindow.CanvasToImage(rc);
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m_rc = rc;
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}
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LRESULT CTextEditWindow::OnPaletteModelColorChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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UpdateFont();
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return 0;
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}
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LRESULT CTextEditWindow::OnToolsModelSettingsChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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UpdateFont();
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return 0;
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}
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LRESULT CTextEditWindow::OnToolsModelZoomChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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UpdateFont();
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ValidateEditRect(NULL);
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return 0;
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}
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LRESULT CTextEditWindow::OnToolsModelToolChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (wParam == TOOL_TEXT)
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{
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UpdateFont();
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}
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else
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{
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ShowWindow(SW_HIDE);
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}
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return 0;
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}
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void CTextEditWindow::UpdateFont()
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{
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if (m_hFont)
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{
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DeleteObject(m_hFont);
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m_hFont = NULL;
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}
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if (m_hFontZoomed)
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{
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DeleteObject(m_hFontZoomed);
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m_hFontZoomed = NULL;
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}
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LOGFONTW lf;
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ZeroMemory(&lf, sizeof(lf));
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lf.lfCharSet = DEFAULT_CHARSET; // registrySettings.CharSet; // Ignore
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lf.lfWeight = (registrySettings.Bold ? FW_BOLD : FW_NORMAL);
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lf.lfItalic = (BYTE)registrySettings.Italic;
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lf.lfUnderline = (BYTE)registrySettings.Underline;
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StringCchCopyW(lf.lfFaceName, _countof(lf.lfFaceName), registrySettings.strFontName);
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HDC hdc = GetDC();
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if (hdc)
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{
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INT nFontSize = registrySettings.PointSize;
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lf.lfHeight = -MulDiv(nFontSize, GetDeviceCaps(hdc, LOGPIXELSY), 72);
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ReleaseDC(hdc);
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}
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m_hFont = ::CreateFontIndirect(&lf);
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lf.lfHeight = Zoomed(lf.lfHeight);
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m_hFontZoomed = ::CreateFontIndirect(&lf);
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SetWindowFont(m_hWnd, m_hFontZoomed, TRUE);
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DefWindowProc(EM_SETMARGINS, EC_LEFTMARGIN | EC_RIGHTMARGIN, MAKELONG(0, 0));
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FixEditPos(NULL);
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Invalidate();
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}
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LRESULT CTextEditWindow::OnSetSel(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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LRESULT ret = DefWindowProc(nMsg, wParam, lParam);
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DefWindowProc(WM_HSCROLL, SB_LEFT, 0);
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DefWindowProc(WM_VSCROLL, SB_TOP, 0);
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InvalidateEditRect();
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return ret;
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}
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BOOL CTextEditWindow::GetEditRect(LPRECT prc) const
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{
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*prc = m_rc;
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return TRUE;
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}
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void CTextEditWindow::ValidateEditRect(LPCRECT prc OPTIONAL)
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{
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if (prc)
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m_rc = *prc;
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CRect rc = m_rc;
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canvasWindow.ImageToCanvas(rc);
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MoveWindow(rc.left, rc.top, rc.Width(), rc.Height(), TRUE);
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}
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LRESULT CTextEditWindow::OnMoving(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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// Restrict the window position to the image area
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LPRECT prcMoving = (LPRECT)lParam;
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CRect rcMoving = *prcMoving;
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CRect rcImage;
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canvasWindow.GetImageRect(rcImage);
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canvasWindow.ImageToCanvas(rcImage);
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canvasWindow.MapWindowPoints(NULL, &rcImage);
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CRect rcWnd;
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GetWindowRect(&rcWnd);
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INT cx = rcWnd.Width(), cy = rcWnd.Height();
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if (rcMoving.left < rcImage.left)
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{
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rcMoving.left = rcImage.left;
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rcMoving.right = rcImage.left + cx;
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}
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else if (rcMoving.right > rcImage.right)
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{
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rcMoving.right = rcImage.right;
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rcMoving.left = rcImage.right - cx;
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}
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if (rcMoving.top < rcImage.top)
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{
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rcMoving.top = rcImage.top;
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rcMoving.bottom = rcImage.top + cy;
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}
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else if (rcMoving.bottom > rcImage.bottom)
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{
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rcMoving.bottom = rcImage.bottom;
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rcMoving.top = rcImage.bottom - cy;
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}
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*prcMoving = rcMoving;
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Invalidate(TRUE);
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return TRUE;
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}
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LRESULT CTextEditWindow::OnSizing(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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// Restrict the window size to the image area
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LPRECT prcSizing = (LPRECT)lParam;
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CRect rcSizing = *prcSizing;
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CRect rcImage;
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canvasWindow.GetImageRect(rcImage);
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canvasWindow.ImageToCanvas(rcImage);
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canvasWindow.MapWindowPoints(NULL, &rcImage);
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// Horizontally
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switch (wParam)
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{
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case WMSZ_BOTTOMLEFT:
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case WMSZ_LEFT:
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case WMSZ_TOPLEFT:
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if (rcSizing.left < rcImage.left)
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rcSizing.left = rcImage.left;
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break;
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case WMSZ_BOTTOMRIGHT:
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case WMSZ_RIGHT:
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case WMSZ_TOPRIGHT:
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if (rcSizing.right > rcImage.right)
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rcSizing.right = rcImage.right;
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break;
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case WMSZ_TOP:
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case WMSZ_BOTTOM:
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default:
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break;
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}
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// Vertically
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switch (wParam)
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{
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case WMSZ_BOTTOM:
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case WMSZ_BOTTOMLEFT:
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case WMSZ_BOTTOMRIGHT:
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if (rcSizing.bottom > rcImage.bottom)
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rcSizing.bottom = rcImage.bottom;
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break;
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case WMSZ_TOP:
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case WMSZ_TOPLEFT:
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case WMSZ_TOPRIGHT:
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if (rcSizing.top < rcImage.top)
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rcSizing.top = rcImage.top;
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break;
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case WMSZ_LEFT:
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case WMSZ_RIGHT:
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default:
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break;
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}
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*prcSizing = rcSizing;
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Invalidate(TRUE);
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return TRUE;
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}
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LRESULT CTextEditWindow::OnMouseWheel(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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return ::SendMessageW(GetParent(), nMsg, wParam, lParam);
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}
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LRESULT CTextEditWindow::OnCut(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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LRESULT ret = DefWindowProc(nMsg, wParam, lParam);
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Invalidate(TRUE); // Redraw
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return ret;
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}
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LRESULT CTextEditWindow::OnPaste(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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LRESULT ret = DefWindowProc(nMsg, wParam, lParam);
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FixEditPos(NULL);
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return ret;
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}
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LRESULT CTextEditWindow::OnClear(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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LRESULT ret = DefWindowProc(nMsg, wParam, lParam);
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Invalidate(TRUE); // Redraw
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return ret;
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}
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