From ef898eaf886f1d176fed003b04f99f24d0c857fb Mon Sep 17 00:00:00 2001 From: Florian Forster Date: Sat, 18 Aug 2007 12:16:26 +0200 Subject: [PATCH] viewer.c: Much improved UI. --- src/viewer.c | 184 +++++++++++++++++++++++++++++++++++++++++------------------ 1 file changed, 129 insertions(+), 55 deletions(-) diff --git a/src/viewer.c b/src/viewer.c index 8773a00..7516db2 100644 --- a/src/viewer.c +++ b/src/viewer.c @@ -184,7 +184,6 @@ static void zoom_out (double *fov) int main( int argc, char** argv ) { - XSizeHints hint; unsigned long color_fg, color_bg; int done; static Atom proto_atom= None, delete_atom= None; @@ -196,10 +195,11 @@ int main( int argc, char** argv ) double pitch = 0.0; /* Detect mouse movement direction */ - int pos_x_new = 0; - int pos_y_new = 0; - int pos_x_old; - int pos_y_old; + unsigned int btn_current_pressed = 0; + int btn_reference_pos_x = 0; + int btn_reference_pos_y = 0; + int btn_current_pos_x = 0; + int btn_current_pos_y = 0; ui_image_t *pano; ui_image_t *view; @@ -243,10 +243,6 @@ int main( int argc, char** argv ) exit (0); } - hint.width = view->width; - hint.height = view->height; - hint.flags = PSize; - window_g = XCreateSimpleWindow(disp_g, DefaultRootWindow(disp_g), 0, 0, /* Position */ @@ -254,19 +250,29 @@ int main( int argc, char** argv ) 5, color_fg, color_bg); - XSetStandardProperties(disp_g, - window_g, - text, - text, - None, - argv, - argc, - &hint); + { + XSizeHints hint; + + memset (&hint, '\0', sizeof (hint)); + hint.width = view->width; + hint.height = view->height; + hint.flags = PSize; + + XSetStandardProperties(disp_g, + window_g, + text, + text, + None, + argv, + argc, + &hint); + } + gc = XCreateGC(disp_g,window_g,0,0); XSetBackground(disp_g,gc,color_bg); XSetForeground(disp_g,gc,color_fg); - event_mask = ButtonPressMask | ButtonReleaseMask | Button1MotionMask + event_mask = ButtonPressMask | ButtonReleaseMask | ButtonMotionMask | KeyPressMask | KeyReleaseMask | StructureNotifyMask | EnterWindowMask | LeaveWindowMask| ExposureMask; @@ -290,12 +296,47 @@ int main( int argc, char** argv ) int isChanged = 0; XEvent event; - XMaskEvent (disp_g, event_mask, &event); + memset (&event, '\0', sizeof (event)); + + if (btn_current_pressed == 0) + { + /* No button is pressed -> block */ + XMaskEvent (disp_g, event_mask, &event); + } + else + { + /* A button is pressed -> do not block */ + XCheckMaskEvent (disp_g, event_mask, &event); + } switch (event.type) { + case 0: /* XCheckMaskEvent didn't return an event */ + break; + case Expose: - draw_window (view); + { + XExposeEvent *eev = (XExposeEvent *) &event; + + while (eev->count != 0) + { + if (!XCheckTypedEvent (disp_g, Expose, &event)) + { + eev = NULL; + break; + } + /* do nothing */ + } + + if (eev != NULL) + isChanged = 1; + } + break; + + case EnterNotify: + break; + + case LeaveNotify: break; case ConfigureNotify: @@ -313,7 +354,15 @@ int main( int argc, char** argv ) case KeyPress: { XKeyEvent *kev = (XKeyEvent *) &event; - KeySym ks = XLookupKeysym (kev, 0); + char buffer[64]; + int buffer_len = sizeof (buffer); + KeySym ks; + + buffer_len = XLookupString(kev, buffer, sizeof (buffer), &ks, NULL); + + if (buffer_len >= sizeof (buffer)) + buffer_len = sizeof (buffer) - 1; + buffer[buffer_len] = '\0'; switch (ks) { @@ -356,62 +405,48 @@ int main( int argc, char** argv ) yaw += 360.0; isChanged = 1; break; + + case XK_q: + done++; + break; + + default: + printf ("Unhandeled KeySym 0x%02llx, buffer = %s\n", (uint64_t) ks, buffer); } } break; +#if 0 case KeyRelease: printf ("Ignoring KeyRelease event.\n"); break; +#endif case ButtonPress: - case ButtonRelease: + /* case ButtonRelease: */ { XButtonEvent *bev = (XButtonEvent *) &event; - pos_x_old = pos_x_new = bev->x; - pos_y_old = pos_y_new = bev->y; + + btn_current_pressed = bev->button; + btn_current_pos_x = btn_reference_pos_x = bev->x; + btn_current_pos_y = btn_reference_pos_y = bev->y; } break; + case ButtonRelease: + btn_current_pressed = 0; + break; + case MotionNotify: { XMotionEvent *mev = (XMotionEvent *) &event; - pos_x_old = pos_x_new; - pos_y_old = pos_y_new; - do { - pos_x_new = mev->x; - pos_y_new = mev->y; + btn_current_pos_x = mev->x; + btn_current_pos_y = mev->y; } while (XCheckTypedEvent (disp_g, MotionNotify, &event)); - - printf ("XMotionEvent received: [%u,%u] -> [%u,%u]\n", - pos_x_old, pos_y_old, pos_x_new, pos_y_new); - - if (mev->state & Button1Mask) - { - double yaw_diff = (pos_x_new - pos_x_old) / 24.0; - if (yaw_diff > 90.0) - yaw_diff = 90.0; - else if (yaw_diff < -90.0) - yaw_diff = -90.0; - - yaw += yaw_diff; - if (yaw > 180.0) - yaw -= 360.0; - else if (yaw <= -180.0) - yaw += 360.0; - - pitch -= (pos_y_new - pos_y_old) / 24.0; - if (pitch > 90.0) - pitch = 90.0; - else if (pitch < -90.0) - pitch = -90.0; - - isChanged = 1; - } } break; @@ -420,6 +455,45 @@ int main( int argc, char** argv ) event.type); } /* switch (event.type) */ + /* + * Check for pressed buttons and change view accordingly + */ + if (btn_current_pressed == Button1) + { + double yaw_diff = (btn_current_pos_x - btn_reference_pos_x) / 24.0; + if (yaw_diff > 90.0) + yaw_diff = 90.0; + else if (yaw_diff < -90.0) + yaw_diff = -90.0; + + yaw += yaw_diff; + if (yaw > 180.0) + yaw -= 360.0; + else if (yaw <= -180.0) + yaw += 360.0; + + pitch -= (btn_current_pos_y - btn_reference_pos_y) / 24.0; + if (pitch > 90.0) + pitch = 90.0; + else if (pitch < -90.0) + pitch = -90.0; + + isChanged = 1; + } + else if (btn_current_pressed == Button3) + { + double zoom_diff = (btn_current_pos_y - btn_reference_pos_y) / 64.0; + double zoom_ratio = pow (ZOOM_SPEED, zoom_diff); + + fov *= zoom_ratio; + if (fov < 10.5) + fov = 10.5; + else if (fov > 165.0) + fov = 165.0; + + isChanged = 1; + } + if (isChanged != 0) { pl_extract_view (view, pano, pitch, yaw, fov); -- 2.11.0