Mouse drag translates pointer position to image area
This makes mouse panning more direct and faster.
This commit is contained in:
parent
9b6acc781e
commit
e310136e02
69
commands.c
69
commands.c
@ -320,72 +320,41 @@ bool ci_scroll_to_edge(arg_t dir)
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return img_pan_edge(&img, dir);
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}
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/* Xlib helper function for i_drag() */
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Bool is_motionnotify(Display *d, XEvent *e, XPointer a)
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{
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return e != NULL && e->type == MotionNotify;
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}
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#define WARP(x,y) \
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XWarpPointer(win.env.dpy, None, win.xwin, 0, 0, 0, 0, x, y); \
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ox = x, oy = y; \
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break
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bool ci_drag(arg_t _)
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{
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int dx = 0, dy = 0, i, ox, oy, x, y;
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int i, x, y;
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float px, py;
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unsigned int ui;
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bool dragging = true, next = false;
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XEvent e;
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Window w;
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if (!XQueryPointer(win.env.dpy, win.xwin, &w, &w, &i, &i, &ox, &oy, &ui))
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if ((int)(img.w * img.zoom) < win.w && (int)(img.h * img.zoom) < win.h)
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return false;
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if (!XQueryPointer(win.env.dpy, win.xwin, &w, &w, &i, &i, &x, &y, &ui))
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return false;
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win_set_cursor(&win, CURSOR_HAND);
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win_set_cursor(&win, CURSOR_DRAG);
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while (dragging) {
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if (!next)
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XMaskEvent(win.env.dpy,
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ButtonPressMask | ButtonReleaseMask | PointerMotionMask, &e);
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switch (e.type) {
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case ButtonPress:
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case ButtonRelease:
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dragging = false;
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break;
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case MotionNotify:
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x = e.xmotion.x;
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y = e.xmotion.y;
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for (;;) {
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px = MIN(MAX(0.0, x - win.w*0.1), win.w*0.8) / (win.w*0.8)
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* (win.w - img.w * img.zoom);
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py = MIN(MAX(0.0, y - win.h*0.1), win.h*0.8) / (win.h*0.8)
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* (win.h - img.h * img.zoom);
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/* wrap the mouse around */
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if (x <= 0) {
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WARP(win.w - 2, y);
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} else if (x >= win.w - 1) {
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WARP(1, y);
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} else if (y <= 0) {
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WARP(x, win.h - 2);
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} else if (y >= win.h - 1) {
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WARP(x, 1);
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}
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dx += x - ox;
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dy += y - oy;
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ox = x;
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oy = y;
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break;
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}
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if (dragging)
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next = XCheckIfEvent(win.env.dpy, &e, is_motionnotify, None);
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if ((!dragging || !next) && (dx != 0 || dy != 0)) {
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if (img_move(&img, dx, dy)) {
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if (img_pos(&img, px, py)) {
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img_render(&img);
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win_draw(&win);
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}
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dx = dy = 0;
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}
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XMaskEvent(win.env.dpy,
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ButtonPressMask | ButtonReleaseMask | PointerMotionMask, &e);
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if (e.type == ButtonPress || e.type == ButtonRelease)
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break;
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while (XCheckTypedEvent(win.env.dpy, MotionNotify, &e));
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x = e.xmotion.x;
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y = e.xmotion.y;
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}
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win_set_cursor(&win, CURSOR_ARROW);
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set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
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reset_timeout(redraw);
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return true;
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}
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11
image.c
11
image.c
@ -567,15 +567,15 @@ bool img_zoom_out(img_t *img)
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return false;
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}
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bool img_move(img_t *img, float dx, float dy)
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bool img_pos(img_t *img, float x, float y)
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{
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float ox, oy;
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ox = img->x;
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oy = img->y;
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img->x += dx;
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img->y += dy;
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img->x = x;
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img->y = y;
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img_check_pan(img, true);
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@ -587,6 +587,11 @@ bool img_move(img_t *img, float dx, float dy)
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}
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}
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bool img_move(img_t *img, float dx, float dy)
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{
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return img_pos(img, img->x + dx, img->y + dy);
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}
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bool img_pan(img_t *img, direction_t dir, int d)
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{
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/* d < 0: screen-wise
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1
image.h
1
image.h
@ -80,6 +80,7 @@ bool img_zoom(img_t*, float);
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bool img_zoom_in(img_t*);
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bool img_zoom_out(img_t*);
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bool img_pos(img_t*, float, float);
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bool img_move(img_t*, float, float);
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bool img_pan(img_t*, direction_t, int);
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bool img_pan_edge(img_t*, direction_t);
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1
main.c
1
main.c
@ -741,6 +741,7 @@ void run(void)
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XPeekEvent(win.env.dpy, &nextev);
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switch (ev.type) {
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case ConfigureNotify:
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case MotionNotify:
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discard = ev.type == nextev.type;
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break;
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case KeyPress:
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2
types.h
2
types.h
@ -66,7 +66,7 @@ typedef enum {
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typedef enum {
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CURSOR_ARROW,
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CURSOR_NONE,
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CURSOR_HAND,
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CURSOR_DRAG,
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CURSOR_WATCH
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} cursor_t;
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10
window.c
10
window.c
@ -37,7 +37,7 @@ enum {
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static Cursor carrow;
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static Cursor cnone;
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static Cursor chand;
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static Cursor cdrag;
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static Cursor cwatch;
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static GC gc;
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@ -210,7 +210,7 @@ void win_open(win_t *win)
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PointerMotionMask | StructureNotifyMask);
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carrow = XCreateFontCursor(e->dpy, XC_left_ptr);
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chand = XCreateFontCursor(e->dpy, XC_fleur);
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cdrag = XCreateFontCursor(e->dpy, XC_dotbox);
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cwatch = XCreateFontCursor(e->dpy, XC_watch);
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if (XAllocNamedColor(e->dpy, DefaultColormap(e->dpy, e->scr), "black",
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@ -277,7 +277,7 @@ CLEANUP void win_close(win_t *win)
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{
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XFreeCursor(win->env.dpy, carrow);
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XFreeCursor(win->env.dpy, cnone);
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XFreeCursor(win->env.dpy, chand);
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XFreeCursor(win->env.dpy, cdrag);
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XFreeCursor(win->env.dpy, cwatch);
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XFreeGC(win->env.dpy, gc);
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@ -465,8 +465,8 @@ void win_set_cursor(win_t *win, cursor_t cursor)
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case CURSOR_NONE:
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XDefineCursor(win->env.dpy, win->xwin, cnone);
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break;
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case CURSOR_HAND:
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XDefineCursor(win->env.dpy, win->xwin, chand);
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case CURSOR_DRAG:
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XDefineCursor(win->env.dpy, win->xwin, cdrag);
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break;
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case CURSOR_WATCH:
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XDefineCursor(win->env.dpy, win->xwin, cwatch);
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