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highgui module: using event->scroll.delta_{x,y} instead parsing direction and added widget event mask GDK_SMOOTH_SCROLL_MASK for GTK>=3.4

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This commit is contained in:
Alexandr Kondratev 2016-07-03 15:52:59 +03:00
parent 7dcac647e5
commit 1f2e159054
1 changed files with 42 additions and 29 deletions
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71
modules/highgui/src/window_gtk.cpp
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@ -52,8 +52,11 @@
#include <stdio.h>
#if (GTK_MAJOR_VERSION == 3)
#define GTK_VERSION3
#define GTK_VERSION3 1
#endif //GTK_MAJOR_VERSION >= 3
#if (GTK_MAJOR_VERSION > 3 || (GTK_MAJOR_VERSION == 3 && GTK_MINOR_VERSION >= 4))
#define GTK_VERSION3_4 1
#endif
#ifdef HAVE_OPENGL
#include <gtk/gtkgl.h>
@ -1086,7 +1089,12 @@ CV_IMPL int cvNamedWindow( const char* name, int flags )
G_CALLBACK(cvImageWidget_expose), window );
#endif //GTK_VERSION3
#if defined(GTK_VERSION3_4)
gtk_widget_add_events (window->widget, GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK | GDK_SCROLL_MASK | GDK_SMOOTH_SCROLL_MASK) ;
#else
gtk_widget_add_events (window->widget, GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK | GDK_SCROLL_MASK) ;
#endif //GTK_VERSION3_4
gtk_widget_show( window->frame );
gtk_window_set_title( GTK_WINDOW(window->frame), name );
@ -1095,7 +1103,7 @@ CV_IMPL int cvNamedWindow( const char* name, int flags )
hg_windows->prev = window;
hg_windows = window;
int b_nautosize = ((flags & CV_WINDOW_AUTOSIZE) == 0);
b_nautosize = ((flags & CV_WINDOW_AUTOSIZE) == 0);
gtk_window_set_resizable( GTK_WINDOW(window->frame), b_nautosize );
// allow window to be resized
@ -1911,7 +1919,7 @@ static gboolean icvOnMouse( GtkWidget *widget, GdkEvent *event, gpointer user_da
CvWindow* window = (CvWindow*)user_data;
CvPoint2D32f pt32f(-1., -1.);
CvPoint pt(-1,-1);
int cv_event = -1, state = 0;
int cv_event = -1, state = 0, flags = 0;
CvImageWidget * image_widget = CV_IMAGE_WIDGET( widget );
if( window->signature != CV_WINDOW_MAGIC_VAL ||
@ -1959,17 +1967,39 @@ static gboolean icvOnMouse( GtkWidget *widget, GdkEvent *event, gpointer user_da
}
else if( event->type == GDK_SCROLL )
{
GdkEventButton* event_button = (GdkEventButton*)event;
#if defined(GTK_VERSION3_4)
// NOTE: in current implementation doesn't possible to put into callback function delta_x and delta_y separetely
double delta = (event->scroll.delta_x + event->scroll.delta_y);
int orient = (event->scroll.delta_y!=0) ? CV_EVENT_MOUSEHWHEEL : CV_EVENT_MOUSEWHEEL;
#else
int orient = CV_EVENT_MOUSEWHEEL;
#endif //GTK_VERSION3_4
cv_event = CV_EVENT_MOUSEWHEEL;
state = event_button->state;
state = event->scroll.state;
switch(event->scroll.direction) {
#if defined(GTK_VERSION3_4)
case GDK_SCROLL_SMOOTH: flags |= (((int)delta << 16) | orient);
break;
#endif //GTK_VERSION3_4
case GDK_SCROLL_LEFT: orient = CV_EVENT_MOUSEHWHEEL;
case GDK_SCROLL_UP: flags |= ((-(int)1 << 16) | orient);
break;
case GDK_SCROLL_RIGHT: orient = CV_EVENT_MOUSEHWHEEL;
case GDK_SCROLL_DOWN: flags |= (((int)1 << 16) | orient);
break;
default: ;
};
}
if( cv_event >= 0 ){
if( cv_event >= 0 )
{
// scale point if image is scaled
if( (image_widget->flags & CV_WINDOW_AUTOSIZE)==0 &&
image_widget->original_image &&
image_widget->scaled_image ){
image_widget->scaled_image )
{
// image origin is not necessarily at (0,0)
#if defined (GTK_VERSION3)
int x0 = (gtk_widget_get_allocated_width(widget) - image_widget->scaled_image->cols)/2;
@ -1983,32 +2013,15 @@ static gboolean icvOnMouse( GtkWidget *widget, GdkEvent *event, gpointer user_da
pt.y = cvFloor( ((pt32f.y-y0)*image_widget->original_image->rows)/
image_widget->scaled_image->rows );
}
else{
else
{
pt = cvPointFrom32f( pt32f );
}
// if((unsigned)pt.x < (unsigned)(image_widget->original_image->width) &&
// (unsigned)pt.y < (unsigned)(image_widget->original_image->height) )
{
int flags = 0;
if (state & GDK_SCROLL_MASK) {
cv_event = CV_EVENT_MOUSEMOVE;
int orient = CV_EVENT_MOUSEWHEEL;
switch(event->scroll.direction) {
case GDK_SCROLL_RIGHT: orient = CV_EVENT_MOUSEHWHEEL;
case GDK_SCROLL_UP: flags |= ((1 << 16) | orient);
break;
case GDK_SCROLL_LEFT: orient = CV_EVENT_MOUSEHWHEEL;
case GDK_SCROLL_DOWN: flags |= ((-1 << 16) | orient);
break;
#if (GTK_MAJOR_VERSION > 3 || (GTK_MAJOR_VERSION == 3 && GTK_MINOR_VERSION >= 4))
case GDK_SCROLL_SMOOTH: // to prevent make warning; TODO
;
#endif //GTK_MAJOR_VERSION > 3 || (GTK_MAJOR_VERSION == 3 && GTK_MINOR_VERSION >= 4)
};
};
flags = flags |
BIT_MAP(state, GDK_SHIFT_MASK, CV_EVENT_FLAG_SHIFTKEY) |
flags |= BIT_MAP(state, GDK_SHIFT_MASK, CV_EVENT_FLAG_SHIFTKEY) |
BIT_MAP(state, GDK_CONTROL_MASK, CV_EVENT_FLAG_CTRLKEY) |
BIT_MAP(state, GDK_MOD1_MASK, CV_EVENT_FLAG_ALTKEY) |
BIT_MAP(state, GDK_MOD2_MASK, CV_EVENT_FLAG_ALTKEY) |
@ -2019,8 +2032,8 @@ static gboolean icvOnMouse( GtkWidget *widget, GdkEvent *event, gpointer user_da
}
}
return FALSE;
}
return FALSE;
}
static gboolean icvAlarm( gpointer user_data )