355 lines
8.3 KiB
C++
355 lines
8.3 KiB
C++
/*
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* Copyright 2004-2020 Sandboxie Holdings, LLC
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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//---------------------------------------------------------------------------
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// Animated Bitmap
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//---------------------------------------------------------------------------
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#include "stdafx.h"
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#include "AnimatedBitmap.h"
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#include "apps/common/MyGdi.h"
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#include <objbase.h>
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#include <gdiplus.h>
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//---------------------------------------------------------------------------
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// MyImage class
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//---------------------------------------------------------------------------
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class CMyImage : public Gdiplus::Image
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{
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IStream *m_pStream;
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public:
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CMyImage()
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: Image() { nativeImage = NULL; m_pStream = NULL; }
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~CMyImage()
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{
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if (m_pStream)
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m_pStream->Release();
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}
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bool SetImage(const WCHAR *rsrcName)
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{
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m_pStream = (IStream *)MyGdi_CreateResourceStream(rsrcName);
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if (! m_pStream)
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return false;
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lastResult = Gdiplus::DllExports::GdipLoadImageFromStream(
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m_pStream, &nativeImage);
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return (lastResult == 0 ? true : false);
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}
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};
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//---------------------------------------------------------------------------
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// Message Map
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//---------------------------------------------------------------------------
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BEGIN_MESSAGE_MAP(CAnimatedBitmap, CStatic)
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ON_WM_PAINT()
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ON_WM_TIMER()
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END_MESSAGE_MAP()
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//---------------------------------------------------------------------------
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// Constructor
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//---------------------------------------------------------------------------
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CAnimatedBitmap::CAnimatedBitmap()
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: CStatic()
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{
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m_image = NULL;
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m_property = NULL;
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m_frame_count = 0;
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m_frame_index = -1;
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}
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//---------------------------------------------------------------------------
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// Destructor
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//---------------------------------------------------------------------------
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CAnimatedBitmap::~CAnimatedBitmap()
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{
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SetImage(NULL);
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}
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//---------------------------------------------------------------------------
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// Init
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//---------------------------------------------------------------------------
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bool CAnimatedBitmap::Init(HWND hwndEdit)
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{
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if (hwndEdit && SubclassWindow(hwndEdit)) {
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ModifyStyleEx(WS_EX_LAYOUTRTL, 0);
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return true;
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} else
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return false;
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}
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//---------------------------------------------------------------------------
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// Init
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//---------------------------------------------------------------------------
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bool CAnimatedBitmap::Init(CDialog *dlg, UINT id)
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{
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HWND hwndEdit;
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dlg->GetDlgItem(id, &hwndEdit);
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return Init(hwndEdit);
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}
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//---------------------------------------------------------------------------
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// SetImage
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//---------------------------------------------------------------------------
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bool CAnimatedBitmap::SetImage(const WCHAR *name)
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{
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//
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// delete resources for old image
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//
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CMyImage *image = (CMyImage *)m_image;
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if (image) {
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delete image;
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m_image = NULL;
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}
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if (m_property) {
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free(m_property);
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m_property = NULL;
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}
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m_frame_count = 0;
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m_frame_index = -1;
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//
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// load image file for new image
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//
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if (! name)
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return false;
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image = new CMyImage();
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if (! image)
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return false;
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if (! image->SetImage(name)) {
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delete image;
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return false;
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}
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//
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// get frame data from the image
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//
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UINT dim_count = image->GetFrameDimensionsCount();
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GUID *dim_ids = (GUID *)malloc(sizeof(GUID) * dim_count);
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if (! dim_ids) {
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delete image;
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return false;
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}
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if (image->GetFrameDimensionsList(dim_ids, dim_count) == 0) {
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m_guid = dim_ids[0];
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int frame_count = image->GetFrameCount(&m_guid);
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UINT item_size = 0;
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Gdiplus::PropertyItem *property = NULL;
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if (frame_count > 1)
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item_size = image->GetPropertyItemSize(PropertyTagFrameDelay);
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if (item_size)
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property = (Gdiplus::PropertyItem *)malloc(item_size);
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if (property) {
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if (image->GetPropertyItem(
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PropertyTagFrameDelay, item_size, property) == 0) {
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free(dim_ids);
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m_image = image;
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m_property = property;
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m_frame_count = frame_count;
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return true;
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}
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}
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}
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free(dim_ids);
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delete image;
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return false;
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}
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//---------------------------------------------------------------------------
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// Animate
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//---------------------------------------------------------------------------
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void CAnimatedBitmap::Animate(bool enable)
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{
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if (! m_image)
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enable = false;
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if (enable && m_frame_index == -1) {
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SetTimer(26880, 10, NULL);
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m_frame_index = 0;
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m_frame_ticks = 0;
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} else if ((! enable) && m_frame_index != -1) {
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KillTimer(26880);
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m_frame_index = -1;
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}
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}
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//---------------------------------------------------------------------------
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// DrawFrame
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//---------------------------------------------------------------------------
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void CAnimatedBitmap::DrawFrame(CDC *dc)
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{
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//
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// create an off-screen buffer to paint into
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//
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CRect rc;
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GetClientRect(&rc);
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CBitmap mem_bmp;
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mem_bmp.CreateCompatibleBitmap(dc, rc.Width(), rc.Height());
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CDC mem_dc;
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mem_dc.CreateCompatibleDC(dc);
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CBitmap *old_bmp = mem_dc.SelectObject(&mem_bmp);
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//
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// paint the image into the off-screen buffer
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//
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CMyImage *image = (CMyImage *)m_image;
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const ULONG width = image->GetWidth();
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const ULONG height = image->GetHeight();
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Gdiplus::Graphics graphics(mem_dc.m_hDC);
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graphics.DrawImage(image, 0, 0, width, height);
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//
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// parent window can paint into off-screen buffer
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//
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CAnimatedBitmap_NM nm;
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nm.hwndFrom = m_hWnd;
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nm.idFrom = GetDlgCtrlID();
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nm.code = NM_CUSTOMDRAW;
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nm.dc = &mem_dc;
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GetParent()->SendMessage(WM_NOTIFY, nm.idFrom, (LPARAM)&nm);
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//
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// copy off-screen buffer into our window and release it
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//
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dc->BitBlt(0, 0, width, height, &mem_dc, 0, 0, SRCCOPY);
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mem_dc.SelectObject(old_bmp);
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}
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//---------------------------------------------------------------------------
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// OnPaint
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//---------------------------------------------------------------------------
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void CAnimatedBitmap::OnPaint()
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{
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if (IsWindowVisible()) {
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PAINTSTRUCT ps;
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CDC *dc = BeginPaint(&ps);
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DrawFrame(dc);
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EndPaint(&ps);
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}
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}
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//---------------------------------------------------------------------------
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// OnTimer
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//---------------------------------------------------------------------------
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void CAnimatedBitmap::OnTimer(UINT_PTR nIDEvent)
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{
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if (nIDEvent == 26880 && m_image && m_frame_index != -1) {
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CMyImage *image = (CMyImage *)m_image;
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GUID page_guid = Gdiplus::FrameDimensionTime;
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image->SelectActiveFrame(&m_guid, m_frame_index);
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ULONG ticks_now = GetTickCount();
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if (m_frame_ticks == 0) {
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Gdiplus::PropertyItem *property =
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(Gdiplus::PropertyItem *)m_property;
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int frame_time = ((long *)property->value)[m_frame_index];
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m_frame_ticks = ticks_now + frame_time * 10;
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if (IsWindowVisible()) {
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CDC *dc = GetDC();
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if (dc) {
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DrawFrame(dc);
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ReleaseDC(dc);
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}
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}
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} else {
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if (m_frame_ticks <= ticks_now) {
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m_frame_ticks = 0;
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++m_frame_index;
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if (m_frame_index == m_frame_count)
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m_frame_index = 0;
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}
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}
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}
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CStatic::OnTimer(nIDEvent);
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}
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