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https://github.com/nihui/opencv-mobile.git
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support imshow in gui on windows (#142)
* support imshow in gui on windows * update win32 imshow window behavior imshow() no longer blocks the thread --------- Co-authored-by: szx0427 <63442056+szx0427@users.noreply.github.com>
This commit is contained in:
Yexuan Wu
@@ -21,6 +21,11 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
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${CMAKE_CURRENT_LIST_DIR}/src/display_fb.cpp)
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${CMAKE_CURRENT_LIST_DIR}/src/display_fb.cpp)
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endif()
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endif()
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if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
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list(APPEND highgui_srcs
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${CMAKE_CURRENT_LIST_DIR}/src/display_win32.cpp)
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endif()
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if(WITH_CVI)
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if(WITH_CVI)
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list(APPEND highgui_srcs
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list(APPEND highgui_srcs
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${CMAKE_CURRENT_LIST_DIR}/src/capture_cvi.cpp
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${CMAKE_CURRENT_LIST_DIR}/src/capture_cvi.cpp
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469
highgui/src/display_win32.cpp
Normal file
469
highgui/src/display_win32.cpp
Normal file
@@ -0,0 +1,469 @@
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//
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// Copyright (C) 2024 szx0427&futz12
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// IMSHOW window for MS Windows
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#include "display_win32.h"
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#include <algorithm>
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#include <cassert>
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#include <map>
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#include <list>
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#include <mutex>
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static constexpr auto classNameBase = "OCVMWndClass";
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static char className[100]; // real class name for current process.
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// Use this process-specific name to ensure that picture replacement for identical-named windows
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// only works for windows in the same process. The windows in other processes,
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// even if they have the same name, are ignored by BitmapWindow::show().
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// That's to say, new windows with the same name will be created.
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static std::map<HWND, SimpleWindow*> g_wndMap;
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static std::recursive_mutex g_creationMutex, g_wndMapMutex;
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static SimpleWindow* g_wndBeingCreated{};
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static ATOM g_ocvmWndClassAtom{};
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thread_local std::list<HWND> th_ocvmBmpWndList;
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typedef std::lock_guard<std::recursive_mutex> defLockGuard;
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template<class T>
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static inline void safeReleaseArray(T* &array) {
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delete[] array;
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array = nullptr;
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}
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static LRESULT CALLBACK __globalWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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if (g_wndBeingCreated) {
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g_wndBeingCreated->m_hWnd = hWnd;
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return g_wndBeingCreated->windowProc(msg, wParam, lParam);
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}
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defLockGuard mapLock(g_wndMapMutex);
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auto it = g_wndMap.find(hWnd);
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if (it != g_wndMap.end()) {
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return it->second->windowProc(msg, wParam, lParam);
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}
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else {
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fprintf(stderr, "[WARNING] display_win32: __globalWndProc: Window %p not found\n", hWnd);
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return DefWindowProcA(hWnd, msg, wParam, lParam);
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}
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}
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SimpleWindow::SimpleWindow()
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: m_hWnd(nullptr)
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{
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}
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SimpleWindow::SimpleWindow(SimpleWindow&& right) noexcept
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{
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*this = std::move(right);
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}
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SimpleWindow& SimpleWindow::operator=(SimpleWindow&& right) noexcept
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{
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detach();
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m_hWnd = right.m_hWnd;
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if (m_hWnd) {
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defLockGuard mapLock(g_wndMapMutex);
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auto it = g_wndMap.find(m_hWnd);
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if (it != g_wndMap.end()) {
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it->second = this;
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}
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else {
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fprintf(stderr, "[WARNING] display_win32: move assignment: Window %p not found\n", m_hWnd);
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}
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right.m_hWnd = nullptr;
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}
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return *this;
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}
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HWND SimpleWindow::getHwnd() const
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{
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return m_hWnd;
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}
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bool SimpleWindow::create(LPCSTR lpWindowName, DWORD dwStyle, int X, int Y, int nWidth, int nHeight, HWND hWndParent, DWORD dwExStyle, HMENU hMenu, LPVOID lpParam)
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{
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assert(!m_hWnd);
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auto hInst = GetModuleHandle(nullptr);
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defLockGuard creationLock(g_creationMutex); // use mutex to ensure thread security
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if (!g_ocvmWndClassAtom) {
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sprintf(className, "%s:%d", classNameBase, static_cast<int>(GetCurrentProcessId()));
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WNDCLASSA wc;
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ZeroMemory(&wc, sizeof(wc));
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wc.style = CS_HREDRAW | CS_VREDRAW;
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wc.lpfnWndProc = __globalWndProc;
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wc.hInstance = hInst;
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wc.lpszClassName = className;
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wc.hCursor = LoadCursor(nullptr, IDC_CROSS);
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g_ocvmWndClassAtom = RegisterClassA(&wc);
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}
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g_wndBeingCreated = this; // storage "this" temporarily to g_wndBeingCreated, which will soon be used by __globalWndProc to process WM_CREATE.
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m_hWnd = CreateWindowExA(dwExStyle, className, lpWindowName, dwStyle, X, Y, nWidth, nHeight, hWndParent, hMenu, hInst, lpParam);
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g_wndBeingCreated = nullptr;
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if (m_hWnd) {
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defLockGuard mapLock(g_wndMapMutex);
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g_wndMap.emplace(m_hWnd, this);
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return true;
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}
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return false;
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}
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void SimpleWindow::centerWindow() const
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{
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assert(m_hWnd);
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RECT rc;
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GetWindowRect(m_hWnd, &rc);
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int x = (GetSystemMetrics(SM_CXFULLSCREEN) - (rc.right - rc.left)) / 2;
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int y = (GetSystemMetrics(SM_CYFULLSCREEN) - (rc.bottom - rc.top)) / 2;
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SetWindowPos(m_hWnd, nullptr, x, y, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
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}
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void SimpleWindow::show(int nCmdShow)
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{
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assert(m_hWnd);
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ShowWindow(m_hWnd, nCmdShow);
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UpdateWindow(m_hWnd);
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}
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#if 0
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int SimpleWindow::messageLoop()
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{
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MSG msg;
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while (GetMessageA(&msg, getHwnd(), 0, 0) > 0) {
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TranslateMessage(&msg);
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DispatchMessageA(&msg);
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}
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return (int)msg.wParam;
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}
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#endif
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LRESULT SimpleWindow::windowProc(UINT msg, WPARAM wParam, LPARAM lParam)
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{
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auto ret = DefWindowProcA(m_hWnd, msg, wParam, lParam);
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if (msg == WM_NCDESTROY) {
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detach();
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}
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return ret;
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}
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double SimpleWindow::getDesktopDpiFactor()
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{
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HDC hDC = GetDC(nullptr);
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double ret = GetDeviceCaps(hDC, LOGPIXELSX) / static_cast<double>(USER_DEFAULT_SCREEN_DPI);
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ReleaseDC(nullptr, hDC);
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return ret;
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}
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void SimpleWindow::detach()
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{
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if (m_hWnd) {
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defLockGuard mapLock(g_wndMapMutex);
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g_wndMap.erase(m_hWnd);
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m_hWnd = nullptr;
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}
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}
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SimpleWindow::~SimpleWindow()
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{
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// NOTE: Directly remove mapping when one SimpleWindow object is being destructed.
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// Errors will occur if multiple SimpleWindow objects are attached to one HWND.
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detach();
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}
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BitmapWindow* BitmapWindow::findOCVMWindowByName(LPCSTR windowName)
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{
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HWND hWnd = FindWindowA((LPCSTR)(intptr_t)g_ocvmWndClassAtom, windowName);
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if (hWnd) {
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defLockGuard mapLock(g_wndMapMutex);
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auto it = g_wndMap.find(hWnd);
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if (it != g_wndMap.end()) {
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return reinterpret_cast<BitmapWindow*>(it->second);
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}
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}
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return nullptr;
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}
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void BitmapWindow::drawBitmap(int horz, int vert)
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{
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if (horz < 0) {
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horz = GetScrollPos(m_hWnd, SB_HORZ);
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}
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if (vert < 0) {
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vert = GetScrollPos(m_hWnd, SB_VERT);
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}
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RECT rc;
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GetClientRect(m_hWnd, &rc);
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if (m_bmpInfo.bmiHeader.biHeight < 0) {
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m_xSrc = horz;
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m_ySrc = vert;
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}
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else {
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m_xSrc = horz;
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m_ySrc = m_bmpInfo.bmiHeader.biHeight - vert - rc.bottom;
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}
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InvalidateRect(m_hWnd, nullptr, FALSE);
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}
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int BitmapWindow::waitKey(UINT delay)
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{
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if (th_ocvmBmpWndList.size() == 0) {
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return -1;
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}
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if (delay > 0) {
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for (auto wnd : th_ocvmBmpWndList) {
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SetTimer(wnd, waitKeyTimerId, delay, nullptr);
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}
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}
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MSG msg;
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int asciiCode = -1;
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while (GetMessageA(&msg, nullptr, 0, 0) > 0) {
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if (msg.hwnd) {
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if (msg.message == WM_WAITKEYTIMEOUT) {
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for (auto wnd : th_ocvmBmpWndList) {
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KillTimer(wnd, waitKeyTimerId);
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}
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// As this thread may have created more than one OCVMWindow,
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// we need to clean up remaining messages in the queue
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// to avoid receiving many WM_WAITKEYTIMEOUT as soon as
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// waitKey() is called next time.
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while (PeekMessageA(&msg, nullptr, 0, 0, PM_REMOVE));
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return -1;
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}
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if (msg.message == WM_CHAR) {
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asciiCode = static_cast<int>(msg.wParam);
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break;
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}
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TranslateMessage(&msg);
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DispatchMessageA(&msg);
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}
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}
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return asciiCode;
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}
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BitmapWindow::BitmapWindow()
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: m_xSrc(0)
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, m_ySrc(0)
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, m_bits(nullptr)
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{
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ZeroMemory(&m_bmpInfo, sizeof(m_bmpInfo));
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int screenWidth = GetSystemMetrics(SM_CXSCREEN);
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int screenHeight = GetSystemMetrics(SM_CYSCREEN);
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HDC hDesktopDC = GetDC(nullptr);
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m_hMemDC = CreateCompatibleDC(hDesktopDC);
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m_hMemBitmap = CreateCompatibleBitmap(hDesktopDC, screenWidth, screenHeight);
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m_hOldBitmap = SelectObject(m_hMemDC, m_hMemBitmap);
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ReleaseDC(nullptr, hDesktopDC);
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}
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BitmapWindow::~BitmapWindow()
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{
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if (m_bits) {
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safeReleaseArray(m_bits);
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}
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SelectObject(m_hMemDC, m_hOldBitmap);
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DeleteObject(m_hMemBitmap);
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DeleteDC(m_hMemDC);
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}
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void BitmapWindow::show(LPCSTR windowName, const BYTE* bmpFileData)
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{
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auto formerWindow = findOCVMWindowByName(windowName);
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if (formerWindow) { // if a window with this name already exists, just update its image
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formerWindow->updateBitmapData(bmpFileData);
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RECT rc;
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GetWindowRect(formerWindow->getHwnd(), &rc);
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SetWindowPos(formerWindow->getHwnd(), nullptr, 0, 0, rc.right - rc.left, rc.bottom - rc.top, SWP_NOZORDER | SWP_NOMOVE);
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formerWindow->updateScrollBarStatus();
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formerWindow->drawBitmap();
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return;
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}
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BitmapWindow* newWindow = new BitmapWindow;
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newWindow->updateBitmapData(bmpFileData);
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auto dpiFactor = getDesktopDpiFactor();
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newWindow->create(windowName, (WS_OVERLAPPEDWINDOW | WS_HSCROLL | WS_VSCROLL) & ~WS_MAXIMIZEBOX, 0, 0, 800 * dpiFactor, 600 * dpiFactor);
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newWindow->centerWindow();
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newWindow->drawBitmap();
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newWindow->updateScrollBarStatus();
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newWindow->SimpleWindow::show(SW_SHOWNORMAL);
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th_ocvmBmpWndList.push_back(newWindow->m_hWnd);
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}
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void BitmapWindow::updateBitmapData(const BYTE* bmpFileData)
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{
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if (m_bits) {
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safeReleaseArray(m_bits);
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}
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BITMAPFILEHEADER* fileHeader = (BITMAPFILEHEADER*)bmpFileData;
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auto bitsSize = fileHeader->bfSize - fileHeader->bfOffBits;
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m_bits = new BYTE[bitsSize];
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memcpy(m_bits, bmpFileData + fileHeader->bfOffBits, bitsSize);
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ZeroMemory(&m_bmpInfo, sizeof(m_bmpInfo));
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memcpy(&m_bmpInfo.bmiHeader, bmpFileData + sizeof(BITMAPFILEHEADER), sizeof(BITMAPINFOHEADER));
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}
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|
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|
void BitmapWindow::updateScrollBarStatus()
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{
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|
RECT rc;
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GetClientRect(m_hWnd, &rc);
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||||||
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int cx = rc.right;
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int cy = rc.bottom;
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if (m_bmpInfo.bmiHeader.biWidth > cx) {
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EnableScrollBar(m_hWnd, SB_HORZ, ESB_ENABLE_BOTH);
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SetScrollRange(m_hWnd, SB_HORZ, 0, m_bmpInfo.bmiHeader.biWidth - cx, TRUE);
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}
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|
else {
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SetScrollPos(m_hWnd, SB_HORZ, 0, FALSE);
|
||||||
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EnableScrollBar(m_hWnd, SB_HORZ, ESB_DISABLE_BOTH);
|
||||||
|
}
|
||||||
|
if (abs(m_bmpInfo.bmiHeader.biHeight) > cy) {
|
||||||
|
EnableScrollBar(m_hWnd, SB_VERT, ESB_ENABLE_BOTH);
|
||||||
|
SetScrollRange(m_hWnd, SB_VERT, 0, abs(m_bmpInfo.bmiHeader.biHeight) - cy, TRUE);
|
||||||
|
}
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||||||
|
else {
|
||||||
|
SetScrollPos(m_hWnd, SB_VERT, 0, FALSE);
|
||||||
|
EnableScrollBar(m_hWnd, SB_VERT, ESB_DISABLE_BOTH);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
LRESULT BitmapWindow::windowProc(UINT msg, WPARAM wParam, LPARAM lParam)
|
||||||
|
{
|
||||||
|
switch (msg)
|
||||||
|
{
|
||||||
|
case WM_TIMER:
|
||||||
|
if (wParam == waitKeyTimerId) {
|
||||||
|
PostMessageA(m_hWnd, WM_WAITKEYTIMEOUT, 0, 0);
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
case WM_PAINT: {
|
||||||
|
PAINTSTRUCT ps;
|
||||||
|
HDC hdc = BeginPaint(m_hWnd, &ps);
|
||||||
|
|
||||||
|
int cx = (std::min)(ps.rcPaint.right, m_bmpInfo.bmiHeader.biWidth);
|
||||||
|
int cy = (std::min)(ps.rcPaint.bottom, m_bmpInfo.bmiHeader.biHeight);
|
||||||
|
|
||||||
|
if (ps.rcPaint.right > m_bmpInfo.bmiHeader.biWidth || ps.rcPaint.bottom > m_bmpInfo.bmiHeader.biHeight) {
|
||||||
|
HBRUSH hbrBkgnd = CreateSolidBrush(RGB(240, 240, 240));
|
||||||
|
FillRect(m_hMemDC, &ps.rcPaint, hbrBkgnd);
|
||||||
|
DeleteObject(hbrBkgnd);
|
||||||
|
StretchDIBits(m_hMemDC, 0, 0, cx, cy, m_xSrc, m_ySrc, cx, cy, m_bits, &m_bmpInfo, DIB_RGB_COLORS, SRCCOPY);
|
||||||
|
BitBlt(hdc, 0, 0, ps.rcPaint.right, ps.rcPaint.bottom, m_hMemDC, 0, 0, SRCCOPY);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
StretchDIBits(hdc, 0, 0, cx, cy, m_xSrc, m_ySrc, cx, cy, m_bits, &m_bmpInfo, DIB_RGB_COLORS, SRCCOPY);
|
||||||
|
}
|
||||||
|
|
||||||
|
EndPaint(m_hWnd, &ps);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
case WM_HSCROLL: {
|
||||||
|
int pos = HIWORD(wParam);
|
||||||
|
switch (LOWORD(wParam)) {
|
||||||
|
case SB_THUMBTRACK:
|
||||||
|
drawBitmap(pos);
|
||||||
|
break;
|
||||||
|
case SB_THUMBPOSITION:
|
||||||
|
SetScrollPos(m_hWnd, SB_HORZ, pos, TRUE);
|
||||||
|
break;
|
||||||
|
case SB_LINELEFT:
|
||||||
|
SetScrollPos(m_hWnd, SB_HORZ, GetScrollPos(m_hWnd, SB_HORZ) - 1, TRUE);
|
||||||
|
drawBitmap();
|
||||||
|
break;
|
||||||
|
case SB_LINERIGHT:
|
||||||
|
SetScrollPos(m_hWnd, SB_HORZ, GetScrollPos(m_hWnd, SB_HORZ) + 1, TRUE);
|
||||||
|
drawBitmap();
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
case WM_VSCROLL: {
|
||||||
|
int pos = HIWORD(wParam);
|
||||||
|
switch (LOWORD(wParam)) {
|
||||||
|
case SB_THUMBTRACK:
|
||||||
|
drawBitmap(-1, pos);
|
||||||
|
break;
|
||||||
|
case SB_THUMBPOSITION:
|
||||||
|
SetScrollPos(m_hWnd, SB_VERT, pos, TRUE);
|
||||||
|
break;
|
||||||
|
case SB_LINEDOWN:
|
||||||
|
SetScrollPos(m_hWnd, SB_VERT, GetScrollPos(m_hWnd, SB_VERT) + 1, TRUE);
|
||||||
|
drawBitmap();
|
||||||
|
break;
|
||||||
|
case SB_LINEUP:
|
||||||
|
SetScrollPos(m_hWnd, SB_VERT, GetScrollPos(m_hWnd, SB_VERT) - 1, TRUE);
|
||||||
|
drawBitmap();
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
case WM_GETMINMAXINFO: {
|
||||||
|
RECT rc;
|
||||||
|
rc.left = rc.top = 0;
|
||||||
|
rc.right = m_bmpInfo.bmiHeader.biWidth;
|
||||||
|
rc.bottom = m_bmpInfo.bmiHeader.biHeight;
|
||||||
|
AdjustWindowRect(&rc, GetWindowLongPtr(m_hWnd, GWL_STYLE), FALSE);
|
||||||
|
int cxVertScroll = GetSystemMetrics(SM_CXVSCROLL);
|
||||||
|
int cyHorzScroll = GetSystemMetrics(SM_CYHSCROLL);
|
||||||
|
auto mmi = (LPMINMAXINFO)lParam;
|
||||||
|
mmi->ptMaxTrackSize = { rc.right - rc.left + cxVertScroll,rc.bottom - rc.top + cyHorzScroll };
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
case WM_SIZE: {
|
||||||
|
if (wParam == SIZE_RESTORED) {
|
||||||
|
updateScrollBarStatus();
|
||||||
|
drawBitmap();
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
case WM_NCDESTROY:
|
||||||
|
th_ocvmBmpWndList.remove(m_hWnd);
|
||||||
|
if (th_ocvmBmpWndList.size() == 0) { // request to stop the message loop in waitKey()
|
||||||
|
// when all windows owned by current thread have been closed
|
||||||
|
PostQuitMessage(0);
|
||||||
|
}
|
||||||
|
SimpleWindow::windowProc(msg, wParam, lParam);
|
||||||
|
delete this;
|
||||||
|
return 0;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
return SimpleWindow::windowProc(msg, wParam, lParam);
|
||||||
|
}
|
||||||
99
highgui/src/display_win32.h
Normal file
99
highgui/src/display_win32.h
Normal file
@@ -0,0 +1,99 @@
|
|||||||
|
//
|
||||||
|
// Copyright (C) 2024 szx0427&futz12
|
||||||
|
//
|
||||||
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||||
|
// you may not use this file except in compliance with the License.
|
||||||
|
// You may obtain a copy of the License at
|
||||||
|
//
|
||||||
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
//
|
||||||
|
// Unless required by applicable law or agreed to in writing, software
|
||||||
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||||
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||||
|
// See the License for the specific language governing permissions and
|
||||||
|
// limitations under the License.
|
||||||
|
//
|
||||||
|
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <Windows.h>
|
||||||
|
|
||||||
|
class SimpleWindow
|
||||||
|
{
|
||||||
|
protected:
|
||||||
|
HWND m_hWnd;
|
||||||
|
virtual LRESULT windowProc(UINT msg, WPARAM wParam, LPARAM lParam);
|
||||||
|
|
||||||
|
public:
|
||||||
|
friend static LRESULT CALLBACK __globalWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
|
||||||
|
|
||||||
|
static double getDesktopDpiFactor();
|
||||||
|
|
||||||
|
// NOTE: a SimpleWindow1 object which is already attached to an HWND should NOT be copied; use pointers instead
|
||||||
|
SimpleWindow(const SimpleWindow&) = delete;
|
||||||
|
SimpleWindow& operator=(const SimpleWindow&) = delete;
|
||||||
|
|
||||||
|
SimpleWindow();
|
||||||
|
SimpleWindow(SimpleWindow&& right) noexcept;
|
||||||
|
SimpleWindow& operator=(SimpleWindow&& right) noexcept;
|
||||||
|
|
||||||
|
HWND getHwnd() const;
|
||||||
|
bool create(
|
||||||
|
LPCSTR lpWindowName,
|
||||||
|
DWORD dwStyle,
|
||||||
|
int X = CW_USEDEFAULT,
|
||||||
|
int Y = CW_USEDEFAULT,
|
||||||
|
int nWidth = CW_USEDEFAULT,
|
||||||
|
int nHeight = CW_USEDEFAULT,
|
||||||
|
HWND hWndParent = nullptr,
|
||||||
|
DWORD dwExStyle = 0,
|
||||||
|
HMENU hMenu = nullptr,
|
||||||
|
LPVOID lpParam = nullptr
|
||||||
|
);
|
||||||
|
void centerWindow() const;
|
||||||
|
|
||||||
|
void show(int nCmdShow);
|
||||||
|
|
||||||
|
#if 0
|
||||||
|
// starts message loop ; blocks the thread calling this
|
||||||
|
// NOT ACTUALLY USED TILL NOW
|
||||||
|
int messageLoop();
|
||||||
|
#endif
|
||||||
|
|
||||||
|
void detach();
|
||||||
|
virtual ~SimpleWindow();
|
||||||
|
};
|
||||||
|
|
||||||
|
// 防止那些你用不到的基类函数干扰你，我直接以protected方式继承
|
||||||
|
class BitmapWindow : protected SimpleWindow
|
||||||
|
{
|
||||||
|
protected:
|
||||||
|
BYTE* m_bits;
|
||||||
|
BITMAPINFO m_bmpInfo;
|
||||||
|
int m_xSrc, m_ySrc;
|
||||||
|
// doubled-buffered painting
|
||||||
|
// NOTE: this is useful in some cases; don't delete these code
|
||||||
|
HDC m_hMemDC;
|
||||||
|
HBITMAP m_hMemBitmap;
|
||||||
|
HGDIOBJ m_hOldBitmap;
|
||||||
|
|
||||||
|
static constexpr int waitKeyTimerId = 150;
|
||||||
|
static constexpr int WM_WAITKEYTIMEOUT = WM_USER + 150;
|
||||||
|
|
||||||
|
// only finds identical-named windows in current process
|
||||||
|
static BitmapWindow* findOCVMWindowByName(LPCSTR windowName);
|
||||||
|
void drawBitmap(int horz = -1, int vert = -1);
|
||||||
|
virtual LRESULT windowProc(UINT msg, WPARAM wParam, LPARAM lParam) override;
|
||||||
|
void updateBitmapData(const BYTE* bmpFileData);
|
||||||
|
void updateScrollBarStatus();
|
||||||
|
|
||||||
|
public:
|
||||||
|
using SimpleWindow::SimpleWindow;
|
||||||
|
BitmapWindow();
|
||||||
|
virtual ~BitmapWindow();
|
||||||
|
using SimpleWindow::getHwnd;
|
||||||
|
|
||||||
|
static void show(LPCSTR windowName, const BYTE* bmpFileData);
|
||||||
|
// NOTE: only manages the windows created by current thread
|
||||||
|
static int waitKey(UINT delay = 0);
|
||||||
|
};
|
||||||
@@ -55,6 +55,11 @@
|
|||||||
#include "display_fb.h"
|
#include "display_fb.h"
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
#ifdef _WIN32
|
||||||
|
#include "display_win32.h"
|
||||||
|
#include <thread>
|
||||||
|
#endif
|
||||||
|
|
||||||
namespace cv {
|
namespace cv {
|
||||||
//
|
//
|
||||||
// 1 2 3 4 5 6 7 8
|
// 1 2 3 4 5 6 7 8
|
||||||
@@ -775,7 +780,15 @@ bool imencode(const String& ext, InputArray _img, std::vector<uchar>& buf, const
|
|||||||
|
|
||||||
void imshow(const String& winname, InputArray mat)
|
void imshow(const String& winname, InputArray mat)
|
||||||
{
|
{
|
||||||
#if __linux__
|
#if _WIN32
|
||||||
|
std::vector<uchar> buf;
|
||||||
|
bool result = cv::imencode(".bmp", mat, buf);
|
||||||
|
if (result) {
|
||||||
|
BitmapWindow::show(winname.c_str(), buf.data());
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
return ;
|
||||||
|
#elif __linux__
|
||||||
if (winname == "fb")
|
if (winname == "fb")
|
||||||
{
|
{
|
||||||
static display_fb dpy;
|
static display_fb dpy;
|
||||||
@@ -845,9 +858,13 @@ void imshow(const String& winname, InputArray mat)
|
|||||||
|
|
||||||
int waitKey(int delay)
|
int waitKey(int delay)
|
||||||
{
|
{
|
||||||
|
#ifdef _WIN32
|
||||||
|
return BitmapWindow::waitKey(delay);
|
||||||
|
#else
|
||||||
(void)delay;
|
(void)delay;
|
||||||
fprintf(stderr, "waitKey stub\n");
|
fprintf(stderr, "waitKey stub\n");
|
||||||
return -1;
|
return -1;
|
||||||
|
#endif
|
||||||
}
|
}
|
||||||
|
|
||||||
} // namespace cv
|
} // namespace cv
|
||||||
|
|||||||
Reference in New Issue
Block a user