mirror of
https://github.com/opencv/opencv.git
synced 2024-12-21 13:48:04 +08:00
ec353dbdda
Update to add window position and size retrieval to HighGUI (#10412) * Update highgui.hpp Add read only property retrieval for enhanced rendering capabilities and more sophisticated research tools * Update window.cpp * Update window_w32.cpp * Update window_QT.cpp * Update window_QT.h * Update window_QT.h * Update window_gtk.cpp * Update precomp.hpp * Update highgui_c.h * Update highgui_c.h * Update window_w32.cpp * Update precomp.hpp * Update window_QT.cpp * Update window_QT.h * Update window_gtk.cpp * Update window_gtk.cpp * Update window_w32.cpp * Update window_QT.cpp * Update window_carbon.cpp * Update window_cocoa.mm * Update precomp.hpp * Update window_cocoa.mm * Update window_w32.cpp * Update window_gtk.cpp * Update window_QT.cpp * Update window_gtk.cpp * Update window_QT.cpp * Update window_cocoa.mm * Update window_carbon.cpp * Update window_w32.cpp * Update window_cocoa.mm * Update window_gtk.cpp * Update window_cocoa.mm * Update window_gtk.cpp * Update window_cocoa.mm * Update window_cocoa.mm * Update window.cpp * Update test_gui.cpp * Update test_gui.cpp * Update test_gui.cpp * Update highgui_c.h * Update highgui.hpp * Update window.cpp * Update highgui_c.h * Update test_gui.cpp * Update highgui.hpp * Update window.cpp * Update window.cpp * Update window.cpp * Update window.cpp * Update window.cpp
845 lines
35 KiB
C++
845 lines
35 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
|
|
//
|
|
// By downloading, copying, installing or using the software you agree to this license.
|
|
// If you do not agree to this license, do not download, install,
|
|
// copy or use the software.
|
|
//
|
|
//
|
|
// License Agreement
|
|
// For Open Source Computer Vision Library
|
|
//
|
|
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
|
|
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
|
|
// Third party copyrights are property of their respective owners.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification,
|
|
// are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistribution's of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
//
|
|
// * Redistribution's in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
//
|
|
// * The name of the copyright holders may not be used to endorse or promote products
|
|
// derived from this software without specific prior written permission.
|
|
//
|
|
// This software is provided by the copyright holders and contributors "as is" and
|
|
// any express or implied warranties, including, but not limited to, the implied
|
|
// warranties of merchantability and fitness for a particular purpose are disclaimed.
|
|
// In no event shall the Intel Corporation or contributors be liable for any direct,
|
|
// indirect, incidental, special, exemplary, or consequential damages
|
|
// (including, but not limited to, procurement of substitute goods or services;
|
|
// loss of use, data, or profits; or business interruption) however caused
|
|
// and on any theory of liability, whether in contract, strict liability,
|
|
// or tort (including negligence or otherwise) arising in any way out of
|
|
// the use of this software, even if advised of the possibility of such damage.
|
|
//
|
|
//M*/
|
|
|
|
#ifndef OPENCV_HIGHGUI_HPP
|
|
#define OPENCV_HIGHGUI_HPP
|
|
|
|
#include "opencv2/core.hpp"
|
|
#ifdef HAVE_OPENCV_IMGCODECS
|
|
#include "opencv2/imgcodecs.hpp"
|
|
#endif
|
|
#ifdef HAVE_OPENCV_VIDEOIO
|
|
#include "opencv2/videoio.hpp"
|
|
#endif
|
|
|
|
/**
|
|
@defgroup highgui High-level GUI
|
|
|
|
While OpenCV was designed for use in full-scale applications and can be used within functionally
|
|
rich UI frameworks (such as Qt\*, WinForms\*, or Cocoa\*) or without any UI at all, sometimes there
|
|
it is required to try functionality quickly and visualize the results. This is what the HighGUI
|
|
module has been designed for.
|
|
|
|
It provides easy interface to:
|
|
|
|
- Create and manipulate windows that can display images and "remember" their content (no need to
|
|
handle repaint events from OS).
|
|
- Add trackbars to the windows, handle simple mouse events as well as keyboard commands.
|
|
|
|
@{
|
|
@defgroup highgui_opengl OpenGL support
|
|
@defgroup highgui_qt Qt New Functions
|
|
|
|
|
|
|
|
This figure explains new functionality implemented with Qt\* GUI. The new GUI provides a statusbar,
|
|
a toolbar, and a control panel. The control panel can have trackbars and buttonbars attached to it.
|
|
If you cannot see the control panel, press Ctrl+P or right-click any Qt window and select **Display
|
|
properties window**.
|
|
|
|
- To attach a trackbar, the window name parameter must be NULL.
|
|
|
|
- To attach a buttonbar, a button must be created. If the last bar attached to the control panel
|
|
is a buttonbar, the new button is added to the right of the last button. If the last bar
|
|
attached to the control panel is a trackbar, or the control panel is empty, a new buttonbar is
|
|
created. Then, a new button is attached to it.
|
|
|
|
See below the example used to generate the figure:
|
|
@code
|
|
int main(int argc, char *argv[])
|
|
{
|
|
|
|
int value = 50;
|
|
int value2 = 0;
|
|
|
|
|
|
namedWindow("main1",WINDOW_NORMAL);
|
|
namedWindow("main2",WINDOW_AUTOSIZE | CV_GUI_NORMAL);
|
|
createTrackbar( "track1", "main1", &value, 255, NULL);
|
|
|
|
String nameb1 = "button1";
|
|
String nameb2 = "button2";
|
|
|
|
createButton(nameb1,callbackButton,&nameb1,QT_CHECKBOX,1);
|
|
createButton(nameb2,callbackButton,NULL,QT_CHECKBOX,0);
|
|
createTrackbar( "track2", NULL, &value2, 255, NULL);
|
|
createButton("button5",callbackButton1,NULL,QT_RADIOBOX,0);
|
|
createButton("button6",callbackButton2,NULL,QT_RADIOBOX,1);
|
|
|
|
setMouseCallback( "main2",on_mouse,NULL );
|
|
|
|
Mat img1 = imread("files/flower.jpg");
|
|
VideoCapture video;
|
|
video.open("files/hockey.avi");
|
|
|
|
Mat img2,img3;
|
|
|
|
while( waitKey(33) != 27 )
|
|
{
|
|
img1.convertTo(img2,-1,1,value);
|
|
video >> img3;
|
|
|
|
imshow("main1",img2);
|
|
imshow("main2",img3);
|
|
}
|
|
|
|
destroyAllWindows();
|
|
|
|
return 0;
|
|
}
|
|
@endcode
|
|
|
|
|
|
@defgroup highgui_winrt WinRT support
|
|
|
|
This figure explains new functionality implemented with WinRT GUI. The new GUI provides an Image control,
|
|
and a slider panel. Slider panel holds trackbars attached to it.
|
|
|
|
Sliders are attached below the image control. Every new slider is added below the previous one.
|
|
|
|
See below the example used to generate the figure:
|
|
@code
|
|
void sample_app::MainPage::ShowWindow()
|
|
{
|
|
static cv::String windowName("sample");
|
|
cv::winrt_initContainer(this->cvContainer);
|
|
cv::namedWindow(windowName); // not required
|
|
|
|
cv::Mat image = cv::imread("Assets/sample.jpg");
|
|
cv::Mat converted = cv::Mat(image.rows, image.cols, CV_8UC4);
|
|
cv::cvtColor(image, converted, COLOR_BGR2BGRA);
|
|
cv::imshow(windowName, converted); // this will create window if it hasn't been created before
|
|
|
|
int state = 42;
|
|
cv::TrackbarCallback callback = [](int pos, void* userdata)
|
|
{
|
|
if (pos == 0) {
|
|
cv::destroyWindow(windowName);
|
|
}
|
|
};
|
|
cv::TrackbarCallback callbackTwin = [](int pos, void* userdata)
|
|
{
|
|
if (pos >= 70) {
|
|
cv::destroyAllWindows();
|
|
}
|
|
};
|
|
cv::createTrackbar("Sample trackbar", windowName, &state, 100, callback);
|
|
cv::createTrackbar("Twin brother", windowName, &state, 100, callbackTwin);
|
|
}
|
|
@endcode
|
|
|
|
@defgroup highgui_c C API
|
|
@}
|
|
*/
|
|
|
|
///////////////////////// graphical user interface //////////////////////////
|
|
namespace cv
|
|
{
|
|
|
|
//! @addtogroup highgui
|
|
//! @{
|
|
|
|
//! Flags for cv::namedWindow
|
|
enum WindowFlags {
|
|
WINDOW_NORMAL = 0x00000000, //!< the user can resize the window (no constraint) / also use to switch a fullscreen window to a normal size.
|
|
WINDOW_AUTOSIZE = 0x00000001, //!< the user cannot resize the window, the size is constrainted by the image displayed.
|
|
WINDOW_OPENGL = 0x00001000, //!< window with opengl support.
|
|
|
|
WINDOW_FULLSCREEN = 1, //!< change the window to fullscreen.
|
|
WINDOW_FREERATIO = 0x00000100, //!< the image expends as much as it can (no ratio constraint).
|
|
WINDOW_KEEPRATIO = 0x00000000, //!< the ratio of the image is respected.
|
|
WINDOW_GUI_EXPANDED=0x00000000, //!< status bar and tool bar
|
|
WINDOW_GUI_NORMAL = 0x00000010, //!< old fashious way
|
|
};
|
|
|
|
//! Flags for cv::setWindowProperty / cv::getWindowProperty
|
|
enum WindowPropertyFlags {
|
|
WND_PROP_FULLSCREEN = 0, //!< fullscreen property (can be WINDOW_NORMAL or WINDOW_FULLSCREEN).
|
|
WND_PROP_AUTOSIZE = 1, //!< autosize property (can be WINDOW_NORMAL or WINDOW_AUTOSIZE).
|
|
WND_PROP_ASPECT_RATIO = 2, //!< window's aspect ration (can be set to WINDOW_FREERATIO or WINDOW_KEEPRATIO).
|
|
WND_PROP_OPENGL = 3, //!< opengl support.
|
|
WND_PROP_VISIBLE = 4 //!< checks whether the window exists and is visible
|
|
};
|
|
|
|
//! Mouse Events see cv::MouseCallback
|
|
enum MouseEventTypes {
|
|
EVENT_MOUSEMOVE = 0, //!< indicates that the mouse pointer has moved over the window.
|
|
EVENT_LBUTTONDOWN = 1, //!< indicates that the left mouse button is pressed.
|
|
EVENT_RBUTTONDOWN = 2, //!< indicates that the right mouse button is pressed.
|
|
EVENT_MBUTTONDOWN = 3, //!< indicates that the middle mouse button is pressed.
|
|
EVENT_LBUTTONUP = 4, //!< indicates that left mouse button is released.
|
|
EVENT_RBUTTONUP = 5, //!< indicates that right mouse button is released.
|
|
EVENT_MBUTTONUP = 6, //!< indicates that middle mouse button is released.
|
|
EVENT_LBUTTONDBLCLK = 7, //!< indicates that left mouse button is double clicked.
|
|
EVENT_RBUTTONDBLCLK = 8, //!< indicates that right mouse button is double clicked.
|
|
EVENT_MBUTTONDBLCLK = 9, //!< indicates that middle mouse button is double clicked.
|
|
EVENT_MOUSEWHEEL = 10,//!< positive and negative values mean forward and backward scrolling, respectively.
|
|
EVENT_MOUSEHWHEEL = 11 //!< positive and negative values mean right and left scrolling, respectively.
|
|
};
|
|
|
|
//! Mouse Event Flags see cv::MouseCallback
|
|
enum MouseEventFlags {
|
|
EVENT_FLAG_LBUTTON = 1, //!< indicates that the left mouse button is down.
|
|
EVENT_FLAG_RBUTTON = 2, //!< indicates that the right mouse button is down.
|
|
EVENT_FLAG_MBUTTON = 4, //!< indicates that the middle mouse button is down.
|
|
EVENT_FLAG_CTRLKEY = 8, //!< indicates that CTRL Key is pressed.
|
|
EVENT_FLAG_SHIFTKEY = 16,//!< indicates that SHIFT Key is pressed.
|
|
EVENT_FLAG_ALTKEY = 32 //!< indicates that ALT Key is pressed.
|
|
};
|
|
|
|
//! Qt font weight
|
|
enum QtFontWeights {
|
|
QT_FONT_LIGHT = 25, //!< Weight of 25
|
|
QT_FONT_NORMAL = 50, //!< Weight of 50
|
|
QT_FONT_DEMIBOLD = 63, //!< Weight of 63
|
|
QT_FONT_BOLD = 75, //!< Weight of 75
|
|
QT_FONT_BLACK = 87 //!< Weight of 87
|
|
};
|
|
|
|
//! Qt font style
|
|
enum QtFontStyles {
|
|
QT_STYLE_NORMAL = 0, //!< Normal font.
|
|
QT_STYLE_ITALIC = 1, //!< Italic font.
|
|
QT_STYLE_OBLIQUE = 2 //!< Oblique font.
|
|
};
|
|
|
|
//! Qt "button" type
|
|
enum QtButtonTypes {
|
|
QT_PUSH_BUTTON = 0, //!< Push button.
|
|
QT_CHECKBOX = 1, //!< Checkbox button.
|
|
QT_RADIOBOX = 2, //!< Radiobox button.
|
|
QT_NEW_BUTTONBAR = 1024 //!< Button should create a new buttonbar
|
|
};
|
|
|
|
/** @brief Callback function for mouse events. see cv::setMouseCallback
|
|
@param event one of the cv::MouseEventTypes constants.
|
|
@param x The x-coordinate of the mouse event.
|
|
@param y The y-coordinate of the mouse event.
|
|
@param flags one of the cv::MouseEventFlags constants.
|
|
@param userdata The optional parameter.
|
|
*/
|
|
typedef void (*MouseCallback)(int event, int x, int y, int flags, void* userdata);
|
|
|
|
/** @brief Callback function for Trackbar see cv::createTrackbar
|
|
@param pos current position of the specified trackbar.
|
|
@param userdata The optional parameter.
|
|
*/
|
|
typedef void (*TrackbarCallback)(int pos, void* userdata);
|
|
|
|
/** @brief Callback function defined to be called every frame. See cv::setOpenGlDrawCallback
|
|
@param userdata The optional parameter.
|
|
*/
|
|
typedef void (*OpenGlDrawCallback)(void* userdata);
|
|
|
|
/** @brief Callback function for a button created by cv::createButton
|
|
@param state current state of the button. It could be -1 for a push button, 0 or 1 for a check/radio box button.
|
|
@param userdata The optional parameter.
|
|
*/
|
|
typedef void (*ButtonCallback)(int state, void* userdata);
|
|
|
|
/** @brief Creates a window.
|
|
|
|
The function namedWindow creates a window that can be used as a placeholder for images and
|
|
trackbars. Created windows are referred to by their names.
|
|
|
|
If a window with the same name already exists, the function does nothing.
|
|
|
|
You can call cv::destroyWindow or cv::destroyAllWindows to close the window and de-allocate any associated
|
|
memory usage. For a simple program, you do not really have to call these functions because all the
|
|
resources and windows of the application are closed automatically by the operating system upon exit.
|
|
|
|
@note
|
|
|
|
Qt backend supports additional flags:
|
|
- **WINDOW_NORMAL or WINDOW_AUTOSIZE:** WINDOW_NORMAL enables you to resize the
|
|
window, whereas WINDOW_AUTOSIZE adjusts automatically the window size to fit the
|
|
displayed image (see imshow ), and you cannot change the window size manually.
|
|
- **WINDOW_FREERATIO or WINDOW_KEEPRATIO:** WINDOW_FREERATIO adjusts the image
|
|
with no respect to its ratio, whereas WINDOW_KEEPRATIO keeps the image ratio.
|
|
- **WINDOW_GUI_NORMAL or WINDOW_GUI_EXPANDED:** WINDOW_GUI_NORMAL is the old way to draw the window
|
|
without statusbar and toolbar, whereas WINDOW_GUI_EXPANDED is a new enhanced GUI.
|
|
By default, flags == WINDOW_AUTOSIZE | WINDOW_KEEPRATIO | WINDOW_GUI_EXPANDED
|
|
|
|
@param winname Name of the window in the window caption that may be used as a window identifier.
|
|
@param flags Flags of the window. The supported flags are: (cv::WindowFlags)
|
|
*/
|
|
CV_EXPORTS_W void namedWindow(const String& winname, int flags = WINDOW_AUTOSIZE);
|
|
|
|
/** @brief Destroys the specified window.
|
|
|
|
The function destroyWindow destroys the window with the given name.
|
|
|
|
@param winname Name of the window to be destroyed.
|
|
*/
|
|
CV_EXPORTS_W void destroyWindow(const String& winname);
|
|
|
|
/** @brief Destroys all of the HighGUI windows.
|
|
|
|
The function destroyAllWindows destroys all of the opened HighGUI windows.
|
|
*/
|
|
CV_EXPORTS_W void destroyAllWindows();
|
|
|
|
CV_EXPORTS_W int startWindowThread();
|
|
|
|
/** @brief Similar to #waitKey, but returns full key code.
|
|
|
|
@note
|
|
|
|
Key code is implementation specific and depends on used backend: QT/GTK/Win32/etc
|
|
|
|
*/
|
|
CV_EXPORTS_W int waitKeyEx(int delay = 0);
|
|
|
|
/** @brief Waits for a pressed key.
|
|
|
|
The function waitKey waits for a key event infinitely (when \f$\texttt{delay}\leq 0\f$ ) or for delay
|
|
milliseconds, when it is positive. Since the OS has a minimum time between switching threads, the
|
|
function will not wait exactly delay ms, it will wait at least delay ms, depending on what else is
|
|
running on your computer at that time. It returns the code of the pressed key or -1 if no key was
|
|
pressed before the specified time had elapsed.
|
|
|
|
@note
|
|
|
|
This function is the only method in HighGUI that can fetch and handle events, so it needs to be
|
|
called periodically for normal event processing unless HighGUI is used within an environment that
|
|
takes care of event processing.
|
|
|
|
@note
|
|
|
|
The function only works if there is at least one HighGUI window created and the window is active.
|
|
If there are several HighGUI windows, any of them can be active.
|
|
|
|
@param delay Delay in milliseconds. 0 is the special value that means "forever".
|
|
*/
|
|
CV_EXPORTS_W int waitKey(int delay = 0);
|
|
|
|
/** @brief Displays an image in the specified window.
|
|
|
|
The function imshow displays an image in the specified window. If the window was created with the
|
|
cv::WINDOW_AUTOSIZE flag, the image is shown with its original size, however it is still limited by the screen resolution.
|
|
Otherwise, the image is scaled to fit the window. The function may scale the image, depending on its depth:
|
|
|
|
- If the image is 8-bit unsigned, it is displayed as is.
|
|
- If the image is 16-bit unsigned or 32-bit integer, the pixels are divided by 256. That is, the
|
|
value range [0,255\*256] is mapped to [0,255].
|
|
- If the image is 32-bit or 64-bit floating-point, the pixel values are multiplied by 255. That is, the
|
|
value range [0,1] is mapped to [0,255].
|
|
|
|
If window was created with OpenGL support, cv::imshow also support ogl::Buffer , ogl::Texture2D and
|
|
cuda::GpuMat as input.
|
|
|
|
If the window was not created before this function, it is assumed creating a window with cv::WINDOW_AUTOSIZE.
|
|
|
|
If you need to show an image that is bigger than the screen resolution, you will need to call namedWindow("", WINDOW_NORMAL) before the imshow.
|
|
|
|
@note This function should be followed by cv::waitKey function which displays the image for specified
|
|
milliseconds. Otherwise, it won't display the image. For example, **waitKey(0)** will display the window
|
|
infinitely until any keypress (it is suitable for image display). **waitKey(25)** will display a frame
|
|
for 25 ms, after which display will be automatically closed. (If you put it in a loop to read
|
|
videos, it will display the video frame-by-frame)
|
|
|
|
@note
|
|
|
|
[__Windows Backend Only__] Pressing Ctrl+C will copy the image to the clipboard.
|
|
|
|
[__Windows Backend Only__] Pressing Ctrl+S will show a dialog to save the image.
|
|
|
|
@param winname Name of the window.
|
|
@param mat Image to be shown.
|
|
*/
|
|
CV_EXPORTS_W void imshow(const String& winname, InputArray mat);
|
|
|
|
/** @brief Resizes window to the specified size
|
|
|
|
@note
|
|
|
|
- The specified window size is for the image area. Toolbars are not counted.
|
|
- Only windows created without cv::WINDOW_AUTOSIZE flag can be resized.
|
|
|
|
@param winname Window name.
|
|
@param width The new window width.
|
|
@param height The new window height.
|
|
*/
|
|
CV_EXPORTS_W void resizeWindow(const String& winname, int width, int height);
|
|
|
|
/** @overload
|
|
@param winname Window name.
|
|
@param size The new window size.
|
|
*/
|
|
CV_EXPORTS_W void resizeWindow(const String& winname, const cv::Size& size);
|
|
|
|
/** @brief Moves window to the specified position
|
|
|
|
@param winname Name of the window.
|
|
@param x The new x-coordinate of the window.
|
|
@param y The new y-coordinate of the window.
|
|
*/
|
|
CV_EXPORTS_W void moveWindow(const String& winname, int x, int y);
|
|
|
|
/** @brief Changes parameters of a window dynamically.
|
|
|
|
The function setWindowProperty enables changing properties of a window.
|
|
|
|
@param winname Name of the window.
|
|
@param prop_id Window property to edit. The supported operation flags are: (cv::WindowPropertyFlags)
|
|
@param prop_value New value of the window property. The supported flags are: (cv::WindowFlags)
|
|
*/
|
|
CV_EXPORTS_W void setWindowProperty(const String& winname, int prop_id, double prop_value);
|
|
|
|
/** @brief Updates window title
|
|
@param winname Name of the window.
|
|
@param title New title.
|
|
*/
|
|
CV_EXPORTS_W void setWindowTitle(const String& winname, const String& title);
|
|
|
|
/** @brief Provides parameters of a window.
|
|
|
|
The function getWindowProperty returns properties of a window.
|
|
|
|
@param winname Name of the window.
|
|
@param prop_id Window property to retrieve. The following operation flags are available: (cv::WindowPropertyFlags)
|
|
|
|
@sa setWindowProperty
|
|
*/
|
|
CV_EXPORTS_W double getWindowProperty(const String& winname, int prop_id);
|
|
|
|
/** @brief Provides rectangle of image in the window.
|
|
|
|
The function getWindowImageRect returns the client screen coordinates, width and height of the image rendering area.
|
|
|
|
@param winname Name of the window.
|
|
|
|
@sa resizeWindow moveWindow
|
|
*/
|
|
CV_EXPORTS_W Rect getWindowImageRect(const String& winname);
|
|
|
|
/** @brief Sets mouse handler for the specified window
|
|
|
|
@param winname Name of the window.
|
|
@param onMouse Mouse callback. See OpenCV samples, such as
|
|
<https://github.com/opencv/opencv/tree/master/samples/cpp/ffilldemo.cpp>, on how to specify and
|
|
use the callback.
|
|
@param userdata The optional parameter passed to the callback.
|
|
*/
|
|
CV_EXPORTS void setMouseCallback(const String& winname, MouseCallback onMouse, void* userdata = 0);
|
|
|
|
/** @brief Gets the mouse-wheel motion delta, when handling mouse-wheel events cv::EVENT_MOUSEWHEEL and
|
|
cv::EVENT_MOUSEHWHEEL.
|
|
|
|
For regular mice with a scroll-wheel, delta will be a multiple of 120. The value 120 corresponds to
|
|
a one notch rotation of the wheel or the threshold for action to be taken and one such action should
|
|
occur for each delta. Some high-precision mice with higher-resolution freely-rotating wheels may
|
|
generate smaller values.
|
|
|
|
For cv::EVENT_MOUSEWHEEL positive and negative values mean forward and backward scrolling,
|
|
respectively. For cv::EVENT_MOUSEHWHEEL, where available, positive and negative values mean right and
|
|
left scrolling, respectively.
|
|
|
|
With the C API, the macro CV_GET_WHEEL_DELTA(flags) can be used alternatively.
|
|
|
|
@note
|
|
|
|
Mouse-wheel events are currently supported only on Windows.
|
|
|
|
@param flags The mouse callback flags parameter.
|
|
*/
|
|
CV_EXPORTS int getMouseWheelDelta(int flags);
|
|
|
|
/** @brief Selects ROI on the given image.
|
|
Function creates a window and allows user to select a ROI using mouse.
|
|
Controls: use `space` or `enter` to finish selection, use key `c` to cancel selection (function will return the zero cv::Rect).
|
|
|
|
@param windowName name of the window where selection process will be shown.
|
|
@param img image to select a ROI.
|
|
@param showCrosshair if true crosshair of selection rectangle will be shown.
|
|
@param fromCenter if true center of selection will match initial mouse position. In opposite case a corner of
|
|
selection rectangle will correspont to the initial mouse position.
|
|
@return selected ROI or empty rect if selection canceled.
|
|
|
|
@note The function sets it's own mouse callback for specified window using cv::setMouseCallback(windowName, ...).
|
|
After finish of work an empty callback will be set for the used window.
|
|
*/
|
|
CV_EXPORTS_W Rect selectROI(const String& windowName, InputArray img, bool showCrosshair = true, bool fromCenter = false);
|
|
|
|
/** @overload
|
|
*/
|
|
CV_EXPORTS_W Rect selectROI(InputArray img, bool showCrosshair = true, bool fromCenter = false);
|
|
|
|
/** @brief Selects ROIs on the given image.
|
|
Function creates a window and allows user to select a ROIs using mouse.
|
|
Controls: use `space` or `enter` to finish current selection and start a new one,
|
|
use `esc` to terminate multiple ROI selection process.
|
|
|
|
@param windowName name of the window where selection process will be shown.
|
|
@param img image to select a ROI.
|
|
@param boundingBoxes selected ROIs.
|
|
@param showCrosshair if true crosshair of selection rectangle will be shown.
|
|
@param fromCenter if true center of selection will match initial mouse position. In opposite case a corner of
|
|
selection rectangle will correspont to the initial mouse position.
|
|
|
|
@note The function sets it's own mouse callback for specified window using cv::setMouseCallback(windowName, ...).
|
|
After finish of work an empty callback will be set for the used window.
|
|
*/
|
|
CV_EXPORTS_W void selectROIs(const String& windowName, InputArray img,
|
|
CV_OUT std::vector<Rect>& boundingBoxes, bool showCrosshair = true, bool fromCenter = false);
|
|
|
|
/** @brief Creates a trackbar and attaches it to the specified window.
|
|
|
|
The function createTrackbar creates a trackbar (a slider or range control) with the specified name
|
|
and range, assigns a variable value to be a position synchronized with the trackbar and specifies
|
|
the callback function onChange to be called on the trackbar position change. The created trackbar is
|
|
displayed in the specified window winname.
|
|
|
|
@note
|
|
|
|
[__Qt Backend Only__] winname can be empty (or NULL) if the trackbar should be attached to the
|
|
control panel.
|
|
|
|
Clicking the label of each trackbar enables editing the trackbar values manually.
|
|
|
|
@param trackbarname Name of the created trackbar.
|
|
@param winname Name of the window that will be used as a parent of the created trackbar.
|
|
@param value Optional pointer to an integer variable whose value reflects the position of the
|
|
slider. Upon creation, the slider position is defined by this variable.
|
|
@param count Maximal position of the slider. The minimal position is always 0.
|
|
@param onChange Pointer to the function to be called every time the slider changes position. This
|
|
function should be prototyped as void Foo(int,void\*); , where the first parameter is the trackbar
|
|
position and the second parameter is the user data (see the next parameter). If the callback is
|
|
the NULL pointer, no callbacks are called, but only value is updated.
|
|
@param userdata User data that is passed as is to the callback. It can be used to handle trackbar
|
|
events without using global variables.
|
|
*/
|
|
CV_EXPORTS int createTrackbar(const String& trackbarname, const String& winname,
|
|
int* value, int count,
|
|
TrackbarCallback onChange = 0,
|
|
void* userdata = 0);
|
|
|
|
/** @brief Returns the trackbar position.
|
|
|
|
The function returns the current position of the specified trackbar.
|
|
|
|
@note
|
|
|
|
[__Qt Backend Only__] winname can be empty (or NULL) if the trackbar is attached to the control
|
|
panel.
|
|
|
|
@param trackbarname Name of the trackbar.
|
|
@param winname Name of the window that is the parent of the trackbar.
|
|
*/
|
|
CV_EXPORTS_W int getTrackbarPos(const String& trackbarname, const String& winname);
|
|
|
|
/** @brief Sets the trackbar position.
|
|
|
|
The function sets the position of the specified trackbar in the specified window.
|
|
|
|
@note
|
|
|
|
[__Qt Backend Only__] winname can be empty (or NULL) if the trackbar is attached to the control
|
|
panel.
|
|
|
|
@param trackbarname Name of the trackbar.
|
|
@param winname Name of the window that is the parent of trackbar.
|
|
@param pos New position.
|
|
*/
|
|
CV_EXPORTS_W void setTrackbarPos(const String& trackbarname, const String& winname, int pos);
|
|
|
|
/** @brief Sets the trackbar maximum position.
|
|
|
|
The function sets the maximum position of the specified trackbar in the specified window.
|
|
|
|
@note
|
|
|
|
[__Qt Backend Only__] winname can be empty (or NULL) if the trackbar is attached to the control
|
|
panel.
|
|
|
|
@param trackbarname Name of the trackbar.
|
|
@param winname Name of the window that is the parent of trackbar.
|
|
@param maxval New maximum position.
|
|
*/
|
|
CV_EXPORTS_W void setTrackbarMax(const String& trackbarname, const String& winname, int maxval);
|
|
|
|
/** @brief Sets the trackbar minimum position.
|
|
|
|
The function sets the minimum position of the specified trackbar in the specified window.
|
|
|
|
@note
|
|
|
|
[__Qt Backend Only__] winname can be empty (or NULL) if the trackbar is attached to the control
|
|
panel.
|
|
|
|
@param trackbarname Name of the trackbar.
|
|
@param winname Name of the window that is the parent of trackbar.
|
|
@param minval New minimum position.
|
|
*/
|
|
CV_EXPORTS_W void setTrackbarMin(const String& trackbarname, const String& winname, int minval);
|
|
|
|
//! @addtogroup highgui_opengl OpenGL support
|
|
//! @{
|
|
|
|
/** @brief Displays OpenGL 2D texture in the specified window.
|
|
|
|
@param winname Name of the window.
|
|
@param tex OpenGL 2D texture data.
|
|
*/
|
|
CV_EXPORTS void imshow(const String& winname, const ogl::Texture2D& tex);
|
|
|
|
/** @brief Sets a callback function to be called to draw on top of displayed image.
|
|
|
|
The function setOpenGlDrawCallback can be used to draw 3D data on the window. See the example of
|
|
callback function below:
|
|
@code
|
|
void on_opengl(void* param)
|
|
{
|
|
glLoadIdentity();
|
|
|
|
glTranslated(0.0, 0.0, -1.0);
|
|
|
|
glRotatef( 55, 1, 0, 0 );
|
|
glRotatef( 45, 0, 1, 0 );
|
|
glRotatef( 0, 0, 0, 1 );
|
|
|
|
static const int coords[6][4][3] = {
|
|
{ { +1, -1, -1 }, { -1, -1, -1 }, { -1, +1, -1 }, { +1, +1, -1 } },
|
|
{ { +1, +1, -1 }, { -1, +1, -1 }, { -1, +1, +1 }, { +1, +1, +1 } },
|
|
{ { +1, -1, +1 }, { +1, -1, -1 }, { +1, +1, -1 }, { +1, +1, +1 } },
|
|
{ { -1, -1, -1 }, { -1, -1, +1 }, { -1, +1, +1 }, { -1, +1, -1 } },
|
|
{ { +1, -1, +1 }, { -1, -1, +1 }, { -1, -1, -1 }, { +1, -1, -1 } },
|
|
{ { -1, -1, +1 }, { +1, -1, +1 }, { +1, +1, +1 }, { -1, +1, +1 } }
|
|
};
|
|
|
|
for (int i = 0; i < 6; ++i) {
|
|
glColor3ub( i*20, 100+i*10, i*42 );
|
|
glBegin(GL_QUADS);
|
|
for (int j = 0; j < 4; ++j) {
|
|
glVertex3d(0.2 * coords[i][j][0], 0.2 * coords[i][j][1], 0.2 * coords[i][j][2]);
|
|
}
|
|
glEnd();
|
|
}
|
|
}
|
|
@endcode
|
|
|
|
@param winname Name of the window.
|
|
@param onOpenGlDraw Pointer to the function to be called every frame. This function should be
|
|
prototyped as void Foo(void\*) .
|
|
@param userdata Pointer passed to the callback function.(__Optional__)
|
|
*/
|
|
CV_EXPORTS void setOpenGlDrawCallback(const String& winname, OpenGlDrawCallback onOpenGlDraw, void* userdata = 0);
|
|
|
|
/** @brief Sets the specified window as current OpenGL context.
|
|
|
|
@param winname Name of the window.
|
|
*/
|
|
CV_EXPORTS void setOpenGlContext(const String& winname);
|
|
|
|
/** @brief Force window to redraw its context and call draw callback ( See cv::setOpenGlDrawCallback ).
|
|
|
|
@param winname Name of the window.
|
|
*/
|
|
CV_EXPORTS void updateWindow(const String& winname);
|
|
|
|
//! @} highgui_opengl
|
|
|
|
//! @addtogroup highgui_qt
|
|
//! @{
|
|
|
|
/** @brief QtFont available only for Qt. See cv::fontQt
|
|
*/
|
|
struct QtFont
|
|
{
|
|
const char* nameFont; //!< Name of the font
|
|
Scalar color; //!< Color of the font. Scalar(blue_component, green_component, red_component[, alpha_component])
|
|
int font_face; //!< See cv::QtFontStyles
|
|
const int* ascii; //!< font data and metrics
|
|
const int* greek;
|
|
const int* cyrillic;
|
|
float hscale, vscale;
|
|
float shear; //!< slope coefficient: 0 - normal, >0 - italic
|
|
int thickness; //!< See cv::QtFontWeights
|
|
float dx; //!< horizontal interval between letters
|
|
int line_type; //!< PointSize
|
|
};
|
|
|
|
/** @brief Creates the font to draw a text on an image.
|
|
|
|
The function fontQt creates a cv::QtFont object. This cv::QtFont is not compatible with putText .
|
|
|
|
A basic usage of this function is the following: :
|
|
@code
|
|
QtFont font = fontQt("Times");
|
|
addText( img1, "Hello World !", Point(50,50), font);
|
|
@endcode
|
|
|
|
@param nameFont Name of the font. The name should match the name of a system font (such as
|
|
*Times*). If the font is not found, a default one is used.
|
|
@param pointSize Size of the font. If not specified, equal zero or negative, the point size of the
|
|
font is set to a system-dependent default value. Generally, this is 12 points.
|
|
@param color Color of the font in BGRA where A = 255 is fully transparent. Use the macro CV_RGB
|
|
for simplicity.
|
|
@param weight Font weight. Available operation flags are : cv::QtFontWeights You can also specify a positive integer for better control.
|
|
@param style Font style. Available operation flags are : cv::QtFontStyles
|
|
@param spacing Spacing between characters. It can be negative or positive.
|
|
*/
|
|
CV_EXPORTS QtFont fontQt(const String& nameFont, int pointSize = -1,
|
|
Scalar color = Scalar::all(0), int weight = QT_FONT_NORMAL,
|
|
int style = QT_STYLE_NORMAL, int spacing = 0);
|
|
|
|
/** @brief Draws a text on the image.
|
|
|
|
The function addText draws *text* on the image *img* using a specific font *font* (see example cv::fontQt
|
|
)
|
|
|
|
@param img 8-bit 3-channel image where the text should be drawn.
|
|
@param text Text to write on an image.
|
|
@param org Point(x,y) where the text should start on an image.
|
|
@param font Font to use to draw a text.
|
|
*/
|
|
CV_EXPORTS void addText( const Mat& img, const String& text, Point org, const QtFont& font);
|
|
|
|
/** @brief Draws a text on the image.
|
|
|
|
@param img 8-bit 3-channel image where the text should be drawn.
|
|
@param text Text to write on an image.
|
|
@param org Point(x,y) where the text should start on an image.
|
|
@param nameFont Name of the font. The name should match the name of a system font (such as
|
|
*Times*). If the font is not found, a default one is used.
|
|
@param pointSize Size of the font. If not specified, equal zero or negative, the point size of the
|
|
font is set to a system-dependent default value. Generally, this is 12 points.
|
|
@param color Color of the font in BGRA where A = 255 is fully transparent.
|
|
@param weight Font weight. Available operation flags are : cv::QtFontWeights You can also specify a positive integer for better control.
|
|
@param style Font style. Available operation flags are : cv::QtFontStyles
|
|
@param spacing Spacing between characters. It can be negative or positive.
|
|
*/
|
|
CV_EXPORTS_W void addText(const Mat& img, const String& text, Point org, const String& nameFont, int pointSize = -1, Scalar color = Scalar::all(0),
|
|
int weight = QT_FONT_NORMAL, int style = QT_STYLE_NORMAL, int spacing = 0);
|
|
|
|
/** @brief Displays a text on a window image as an overlay for a specified duration.
|
|
|
|
The function displayOverlay displays useful information/tips on top of the window for a certain
|
|
amount of time *delayms*. The function does not modify the image, displayed in the window, that is,
|
|
after the specified delay the original content of the window is restored.
|
|
|
|
@param winname Name of the window.
|
|
@param text Overlay text to write on a window image.
|
|
@param delayms The period (in milliseconds), during which the overlay text is displayed. If this
|
|
function is called before the previous overlay text timed out, the timer is restarted and the text
|
|
is updated. If this value is zero, the text never disappears.
|
|
*/
|
|
CV_EXPORTS_W void displayOverlay(const String& winname, const String& text, int delayms = 0);
|
|
|
|
/** @brief Displays a text on the window statusbar during the specified period of time.
|
|
|
|
The function displayStatusBar displays useful information/tips on top of the window for a certain
|
|
amount of time *delayms* . This information is displayed on the window statusbar (the window must be
|
|
created with the CV_GUI_EXPANDED flags).
|
|
|
|
@param winname Name of the window.
|
|
@param text Text to write on the window statusbar.
|
|
@param delayms Duration (in milliseconds) to display the text. If this function is called before
|
|
the previous text timed out, the timer is restarted and the text is updated. If this value is
|
|
zero, the text never disappears.
|
|
*/
|
|
CV_EXPORTS_W void displayStatusBar(const String& winname, const String& text, int delayms = 0);
|
|
|
|
/** @brief Saves parameters of the specified window.
|
|
|
|
The function saveWindowParameters saves size, location, flags, trackbars value, zoom and panning
|
|
location of the window windowName.
|
|
|
|
@param windowName Name of the window.
|
|
*/
|
|
CV_EXPORTS void saveWindowParameters(const String& windowName);
|
|
|
|
/** @brief Loads parameters of the specified window.
|
|
|
|
The function loadWindowParameters loads size, location, flags, trackbars value, zoom and panning
|
|
location of the window windowName.
|
|
|
|
@param windowName Name of the window.
|
|
*/
|
|
CV_EXPORTS void loadWindowParameters(const String& windowName);
|
|
|
|
CV_EXPORTS int startLoop(int (*pt2Func)(int argc, char *argv[]), int argc, char* argv[]);
|
|
|
|
CV_EXPORTS void stopLoop();
|
|
|
|
/** @brief Attaches a button to the control panel.
|
|
|
|
The function createButton attaches a button to the control panel. Each button is added to a
|
|
buttonbar to the right of the last button. A new buttonbar is created if nothing was attached to the
|
|
control panel before, or if the last element attached to the control panel was a trackbar or if the
|
|
QT_NEW_BUTTONBAR flag is added to the type.
|
|
|
|
See below various examples of the cv::createButton function call: :
|
|
@code
|
|
createButton(NULL,callbackButton);//create a push button "button 0", that will call callbackButton.
|
|
createButton("button2",callbackButton,NULL,QT_CHECKBOX,0);
|
|
createButton("button3",callbackButton,&value);
|
|
createButton("button5",callbackButton1,NULL,QT_RADIOBOX);
|
|
createButton("button6",callbackButton2,NULL,QT_PUSH_BUTTON,1);
|
|
createButton("button6",callbackButton2,NULL,QT_PUSH_BUTTON|QT_NEW_BUTTONBAR);// create a push button in a new row
|
|
@endcode
|
|
|
|
@param bar_name Name of the button.
|
|
@param on_change Pointer to the function to be called every time the button changes its state.
|
|
This function should be prototyped as void Foo(int state,\*void); . *state* is the current state
|
|
of the button. It could be -1 for a push button, 0 or 1 for a check/radio box button.
|
|
@param userdata Pointer passed to the callback function.
|
|
@param type Optional type of the button. Available types are: (cv::QtButtonTypes)
|
|
@param initial_button_state Default state of the button. Use for checkbox and radiobox. Its
|
|
value could be 0 or 1. (__Optional__)
|
|
*/
|
|
CV_EXPORTS int createButton( const String& bar_name, ButtonCallback on_change,
|
|
void* userdata = 0, int type = QT_PUSH_BUTTON,
|
|
bool initial_button_state = false);
|
|
|
|
//! @} highgui_qt
|
|
|
|
//! @} highgui
|
|
|
|
} // cv
|
|
|
|
#ifndef DISABLE_OPENCV_24_COMPATIBILITY
|
|
#include "opencv2/highgui/highgui_c.h"
|
|
#endif
|
|
|
|
#endif
|