+++ /dev/null
-/*
-* PROJECT: ReactOS Character Map
-* LICENSE: GPL - See COPYING in the top level directory
-* FILE: base/applications/charmap/GridView.cpp
-* PURPOSE: Class for for the window which contains the font matrix
-* COPYRIGHT: Copyright 2015 Ged Murphy <gedmurphy@reactos.org>
-*/
-
-
-#include "precomp.h"
-#include "GridView.h"
-#include "Cell.h"
-
-
-/* DATA *****************************************************/
-
-extern HINSTANCE g_hInstance;
-
-
-/* PUBLIC METHODS **********************************************/
-
-CGridView::CGridView() :
- m_xNumCells(20),
- m_yNumCells(10),
- m_ScrollPosition(0),
- m_NumRows(0)
-{
- m_szMapWndClass = L"CharGridWClass";
-}
-
-CGridView::~CGridView()
-{
-}
-
-bool
-CGridView::Create(
- _In_ HWND hParent
- )
-{
- WNDCLASSW wc = { 0 };
- wc.style = CS_DBLCLKS;
- wc.lpfnWndProc = MapWndProc;
- wc.cbWndExtra = sizeof(CGridView *);
- wc.hInstance = g_hInstance;
- wc.hCursor = LoadCursorW(NULL, (LPWSTR)IDC_ARROW);
- wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
- wc.lpszClassName = m_szMapWndClass;
-
- if (RegisterClassW(&wc))
- {
- m_hwnd = CreateWindowExW(0,
- m_szMapWndClass,
- NULL,
- WS_CHILD | WS_VISIBLE | WS_TABSTOP | WS_VSCROLL,
- 0,0,0,0,
- hParent,
- NULL,
- g_hInstance,
- this);
-
- }
-
- return !!(m_hwnd != NULL);
-}
-
-bool
-CGridView::SetFont(
- _In_ CAtlString& FontName
- )
-{
-
- // Create a temporary container for the new font
- CurrentFont NewFont = { 0 };
- NewFont.FontName = FontName;
-
- // Get the DC for the full grid window
- HDC hdc;
- hdc = GetDC(m_hwnd);
- if (hdc == NULL) return false;
-
- // Setup the logfont structure
- NewFont.Font.lfHeight = 0; // This is set in WM_SIZE
- NewFont.Font.lfCharSet = DEFAULT_CHARSET;
- StringCchCopyW(NewFont.Font.lfFaceName, LF_FACESIZE, FontName);
-
- // Get a handle to the new font
- NewFont.hFont = CreateFontIndirectW(&NewFont.Font);
- if (NewFont.hFont == NULL)
- {
- ReleaseDC(m_hwnd, hdc);
- return false;
- }
-
- // Setup an array of all possible non-BMP indices
- WCHAR ch[MAX_GLYPHS];
- for (int i = 0; i < MAX_GLYPHS; i++)
- ch[i] = (WCHAR)i;
-
- HFONT hOldFont;
- hOldFont = (HFONT)SelectObject(hdc, NewFont.hFont);
-
- // Translate all the indices into glyphs
- WORD out[MAX_GLYPHS];
- DWORD Status;
- Status = GetGlyphIndicesW(hdc,
- ch,
- MAX_GLYPHS,
- out,
- GGI_MARK_NONEXISTING_GLYPHS);
- ReleaseDC(m_hwnd, hdc);
- if (Status == GDI_ERROR)
- {
- SelectObject(hdc, hOldFont);
- return false;
- }
-
- // Loop all the glyphs looking for valid ones
- // and store those in our font data
- int j = 0;
- for (int i = 0; i < MAX_GLYPHS; i++)
- {
- if (out[i] != 0xffff)
- {
- NewFont.ValidGlyphs[j] = ch[i];
- j++;
- }
- }
- NewFont.NumValidGlyphs = j;
-
- // Calculate the number of rows required to hold all glyphs
- m_NumRows = NewFont.NumValidGlyphs / m_xNumCells;
- if (NewFont.NumValidGlyphs % m_xNumCells)
- m_NumRows += 1;
-
- // Set the scrollbar in relation to the rows
- SetScrollRange(m_hwnd, SB_VERT, 0, m_NumRows - m_yNumCells, FALSE);
-
- // We're done, update the current font
- m_CurrentFont = NewFont;
-
- // We changed the font, we'll need to repaint the whole window
- InvalidateRect(m_hwnd,
- NULL,
- TRUE);
-
- return true;
-}
-
-
-
-/* PRIVATE METHODS **********************************************/
-
-bool
-CGridView::UpdateCellCoordinates(
- )
-{
- // Go through all the cells and calculate
- // their coordinates within the grid
- for (int y = 0; y < m_yNumCells; y++)
- for (int x = 0; x < m_xNumCells; x++)
- {
- RECT CellCoordinates;
- CellCoordinates.left = x * m_CellSize.cx;
- CellCoordinates.top = y * m_CellSize.cy;
- CellCoordinates.right = (x + 1) * m_CellSize.cx + 1;
- CellCoordinates.bottom = (y + 1) * m_CellSize.cy + 1;
-
- m_Cells[y][x]->SetCellCoordinates(CellCoordinates);
- }
-
- return true;
-}
-
-LRESULT
-CGridView::OnCreate(
- _In_ HWND hwnd,
- _In_ HWND hParent
- )
-{
- m_hwnd = hwnd;
- m_hParent = hParent;
-
- // C++ doesn't allow : "CCells ***C = new CCell***[x * y]"
- // so we have to build the 2d array up manually
- m_Cells = new CCell**[m_yNumCells]; // rows
- for (int i = 0; i < m_yNumCells; i++)
- m_Cells[i] = new CCell*[m_xNumCells]; // columns
-
- for (int y = 0; y < m_yNumCells; y++)
- for (int x = 0; x < m_xNumCells; x++)
- {
- m_Cells[y][x] = new CCell(m_hwnd);
- }
-
- // Give the first cell focus
- SetCellFocus(m_Cells[0][0]);
-
- return 0;
-}
-
-LRESULT
-CGridView::OnSize(
- _In_ INT Width,
- _In_ INT Height
- )
-{
- // Get the client area of the main dialog
- RECT ParentRect;
- GetClientRect(m_hParent, &ParentRect);
-
- // Calculate the grid size using the parent
- m_ClientCoordinates.left = ParentRect.left + 25;
- m_ClientCoordinates.top = ParentRect.top + 50;
- m_ClientCoordinates.right = ParentRect.right - m_ClientCoordinates.left - 10;
- m_ClientCoordinates.bottom = ParentRect.bottom - m_ClientCoordinates.top - 70;
-
- // Resize the grid window
- SetWindowPos(m_hwnd,
- NULL,
- m_ClientCoordinates.left,
- m_ClientCoordinates.top,
- m_ClientCoordinates.right,
- m_ClientCoordinates.bottom,
- SWP_NOZORDER | SWP_SHOWWINDOW);
-
- // Get the client area we can draw on. The position we set above includes
- // a scrollbar which we obviously can't draw on. GetClientRect gives us
- // the size without the scroll, and it's more efficient than getting the
- // scroll metrics and calculating the size from that
- RECT ClientRect;
- GetClientRect(m_hwnd, &ClientRect);
- m_CellSize.cx = ClientRect.right / m_xNumCells;
- m_CellSize.cy = ClientRect.bottom / m_yNumCells;
-
- // Let all the cells know about their new coords
- UpdateCellCoordinates();
-
- // We scale the font size up or down depending on the cell size
- if (m_CurrentFont.hFont)
- {
- // Delete the existing font
- DeleteObject(m_CurrentFont.hFont);
-
- HDC hdc;
- hdc = GetDC(m_hwnd);
- if (hdc)
- {
- // Update the font size with respect to the cell size
- m_CurrentFont.Font.lfHeight = (m_CellSize.cy - 5);
- m_CurrentFont.hFont = CreateFontIndirectW(&m_CurrentFont.Font);
- ReleaseDC(m_hwnd, hdc);
- }
- }
-
- // Redraw the whole grid
- InvalidateRect(m_hwnd, &ClientRect, TRUE);
-
- return 0;
-}
-
-VOID
-CGridView::OnVScroll(_In_ INT Value,
- _In_ INT Pos)
-{
-
- INT PrevScrollPosition = m_ScrollPosition;
-
- switch (Value)
- {
- case SB_LINEUP:
- m_ScrollPosition -= 1;
- break;
-
- case SB_LINEDOWN:
- m_ScrollPosition += 1;
- break;
-
- case SB_PAGEUP:
- m_ScrollPosition -= m_yNumCells;
- break;
-
- case SB_PAGEDOWN:
- m_ScrollPosition += m_yNumCells;
- break;
-
- case SB_THUMBTRACK:
- m_ScrollPosition = Pos;
- break;
-
- default:
- break;
- }
-
- // Make sure we don't scroll past row 0 or max rows
- m_ScrollPosition = max(0, m_ScrollPosition);
- m_ScrollPosition = min(m_ScrollPosition, m_NumRows);
-
- // Check if there's a difference from the previous position
- INT ScrollDiff;
- ScrollDiff = PrevScrollPosition - m_ScrollPosition;
- if (ScrollDiff)
- {
- // Set the new scrollbar position in the scroll box
- SetScrollPos(m_hwnd,
- SB_VERT,
- m_ScrollPosition,
- TRUE);
-
- // Check if the scrollbar has moved more than the
- // number of visible rows (draged or paged)
- if (abs(ScrollDiff) < m_yNumCells)
- {
- RECT rect;
- GetClientRect(m_hwnd, &rect);
-
- // Scroll the visible cells which remain within the grid
- // and invalidate any new ones which appear from the top / bottom
- ScrollWindowEx(m_hwnd,
- 0,
- ScrollDiff * m_CellSize.cy,
- &rect,
- &rect,
- NULL,
- NULL,
- SW_INVALIDATE);
- }
- else
- {
- // All the cells need to be redrawn
- InvalidateRect(m_hwnd,
- NULL,
- TRUE);
- }
- }
-}
-
-LRESULT
-CGridView::OnPaint(
- _In_opt_ HDC hdc
- )
-{
- PAINTSTRUCT PaintStruct = { 0 };
- HDC LocalHdc = NULL;
- BOOL bSuccess = FALSE;
-
- // Check if we were passed a DC
- if (hdc == NULL)
- {
- // We weren't, let's get one
- LocalHdc = BeginPaint(m_hwnd, &PaintStruct);
- if (LocalHdc) bSuccess = TRUE;
- }
- else
- {
- // Use the existing DC and just get the region to paint
- bSuccess = GetUpdateRect(m_hwnd,
- &PaintStruct.rcPaint,
- TRUE);
- if (bSuccess)
- {
- // Update the struct with the DC we were passed
- PaintStruct.hdc = (HDC)hdc;
- }
- }
-
- // Make sure we have a valid DC
- if (bSuccess)
- {
- // Paint the grid and chars
- DrawGrid(&PaintStruct);
-
- if (LocalHdc)
- {
- EndPaint(m_hwnd, &PaintStruct);
- }
- }
-
- return 0;
-}
-
-LRESULT
-CALLBACK
-CGridView::MapWndProc(
- HWND hwnd,
- UINT uMsg,
- WPARAM wParam,
- LPARAM lParam
- )
-{
- CGridView *This;
- LRESULT RetCode = 0;
-
- // Get the object pointer from window context
- This = (CGridView *)GetWindowLongPtr(hwnd, GWLP_USERDATA);
- if (This == NULL)
- {
- // Check that this isn't a create message
- if (uMsg != WM_CREATE)
- {
- // Don't handle null info pointer
- goto HandleDefaultMessage;
- }
- }
-
- switch (uMsg)
- {
- case WM_CREATE:
- {
- // Get the object pointer from the create param
- This = (CGridView *)((LPCREATESTRUCT)lParam)->lpCreateParams;
-
- // Store the pointer in the window's global user data
- SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)This);
-
- This->OnCreate(hwnd, ((LPCREATESTRUCTW)lParam)->hwndParent);
- break;
- }
-
- case WM_SIZE:
- {
- INT Width, Height;
- Width = LOWORD(lParam);
- Height = HIWORD(lParam);
-
- This->OnSize(Width, Height);
- break;
- }
-
- case WM_VSCROLL:
- {
- INT Value, Pos;
- Value = LOWORD(wParam);
- Pos = HIWORD(wParam);
-
- This->OnVScroll(Value, Pos);
- break;
- }
-
- case WM_PAINT:
- {
- This->OnPaint((HDC)wParam);
- break;
- }
-
- case WM_DESTROY:
- {
- This->DeleteCells();
- break;
- }
-
- default:
- {
-HandleDefaultMessage:
- RetCode = DefWindowProcW(hwnd, uMsg, wParam, lParam);
- break;
- }
- }
-
- return RetCode;
-}
-
-
-void
-CGridView::DrawGrid(
- _In_ LPPAINTSTRUCT PaintStruct
- )
-{
- // Calculate which glyph to start at based on scroll position
- int i;
- i = m_xNumCells * m_ScrollPosition;
-
- // Make sure we have the correct font on the DC
- HFONT hOldFont;
- hOldFont = (HFONT)SelectFont(PaintStruct->hdc,
- m_CurrentFont.hFont);
-
- // Traverse all the cells
- for (int y = 0; y < m_yNumCells; y++)
- for (int x = 0; x < m_xNumCells; x++)
- {
- // Update the glyph for this cell
- WCHAR ch = (WCHAR)m_CurrentFont.ValidGlyphs[i];
- m_Cells[y][x]->SetChar(ch);
-
- // Tell it to paint itself
- m_Cells[y][x]->OnPaint(*PaintStruct);
- i++;
- }
-
- SelectObject(PaintStruct->hdc, hOldFont);
-
-}
-
-void
-CGridView::DeleteCells()
-{
- if (m_Cells == nullptr)
- return;
-
- // Free cells withing the 2d array
- for (int i = 0; i < m_yNumCells; i++)
- delete[] m_Cells[i];
- delete[] m_Cells;
-
- m_Cells = nullptr;
-}
-
-void
-CGridView::SetCellFocus(
- _In_ CCell* NewActiveCell
- )
-{
- if (m_ActiveCell)
- {
- // Remove focus from any existing cell
- m_ActiveCell->SetFocus(false);
- InvalidateRect(m_hwnd, m_ActiveCell->GetCellCoordinates(), TRUE);
- }
-
- // Set the new active cell and give it focus
- m_ActiveCell = NewActiveCell;
- m_ActiveCell->SetFocus(true);
-}
\ No newline at end of file
projects / reactos.git / blobdiff