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00001 /* 00002 * vim:ts=4:sw=4:expandtab 00003 */ 00004 #include "all.h" 00005 00006 extern xcb_connection_t *conn; 00007 00008 /* 00009 * This is an ugly data structure which we need because there is no standard 00010 * way of having nested functions (only available as a gcc extension at the 00011 * moment, clang doesn’t support it) or blocks (only available as a clang 00012 * extension and only on Mac OS X systems at the moment). 00013 * 00014 */ 00015 struct callback_params { 00016 orientation_t orientation; 00017 Con *output; 00018 xcb_window_t helpwin; 00019 uint32_t *new_position; 00020 }; 00021 00022 DRAGGING_CB(resize_callback) { 00023 struct callback_params *params = extra; 00024 Con *output = params->output; 00025 DLOG("new x = %d, y = %d\n", new_x, new_y); 00026 if (params->orientation == HORIZ) { 00027 /* Check if the new coordinates are within screen boundaries */ 00028 if (new_x > (output->rect.x + output->rect.width - 25) || 00029 new_x < (output->rect.x + 25)) 00030 return; 00031 00032 *(params->new_position) = new_x; 00033 xcb_configure_window(conn, params->helpwin, XCB_CONFIG_WINDOW_X, params->new_position); 00034 } else { 00035 if (new_y > (output->rect.y + output->rect.height - 25) || 00036 new_y < (output->rect.y + 25)) 00037 return; 00038 00039 *(params->new_position) = new_y; 00040 xcb_configure_window(conn, params->helpwin, XCB_CONFIG_WINDOW_Y, params->new_position); 00041 } 00042 00043 xcb_flush(conn); 00044 } 00045 00046 int resize_graphical_handler(Con *first, Con *second, orientation_t orientation, xcb_button_press_event_t *event) { 00047 DLOG("resize handler\n"); 00048 00049 uint32_t new_position; 00050 00051 /* TODO: previously, we were getting a rect containing all screens. why? */ 00052 Con *output = con_get_output(first); 00053 DLOG("x = %d, width = %d\n", output->rect.x, output->rect.width); 00054 00055 uint32_t mask = 0; 00056 uint32_t values[2]; 00057 00058 mask = XCB_CW_OVERRIDE_REDIRECT; 00059 values[0] = 1; 00060 00061 /* Open a new window, the resizebar. Grab the pointer and move the window around 00062 as the user moves the pointer. */ 00063 xcb_window_t grabwin = create_window(conn, output->rect, XCB_WINDOW_CLASS_INPUT_ONLY, XCURSOR_CURSOR_POINTER, true, mask, values); 00064 00065 Rect helprect; 00066 if (orientation == HORIZ) { 00067 helprect.x = event->root_x; 00068 helprect.y = output->rect.y; 00069 helprect.width = 2; 00070 helprect.height = output->rect.height; 00071 new_position = event->root_x; 00072 } else { 00073 helprect.x = output->rect.x; 00074 helprect.y = event->root_y; 00075 helprect.width = output->rect.width; 00076 helprect.height = 2; 00077 new_position = event->root_y; 00078 } 00079 00080 mask = XCB_CW_BACK_PIXEL; 00081 values[0] = config.client.focused.border; 00082 00083 mask |= XCB_CW_OVERRIDE_REDIRECT; 00084 values[1] = 1; 00085 00086 xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT, 00087 (orientation == HORIZ ? 00088 XCURSOR_CURSOR_RESIZE_HORIZONTAL : 00089 XCURSOR_CURSOR_RESIZE_VERTICAL), true, mask, values); 00090 00091 xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin); 00092 00093 xcb_flush(conn); 00094 00095 struct callback_params params = { orientation, output, helpwin, &new_position }; 00096 00097 drag_pointer(NULL, event, grabwin, BORDER_TOP, resize_callback, ¶ms); 00098 00099 xcb_destroy_window(conn, helpwin); 00100 xcb_destroy_window(conn, grabwin); 00101 xcb_flush(conn); 00102 00103 int pixels; 00104 if (orientation == HORIZ) 00105 pixels = (new_position - event->root_x); 00106 else pixels = (new_position - event->root_y); 00107 00108 DLOG("Done, pixels = %d\n", pixels); 00109 00110 // if we got thus far, the containers must have 00111 // percentages associated with them 00112 assert(first->percent > 0.0); 00113 assert(second->percent > 0.0); 00114 00115 // calculate the new percentage for the first container 00116 double new_percent, difference; 00117 double percent = first->percent; 00118 DLOG("percent = %f\n", percent); 00119 int original = (orientation == HORIZ ? first->rect.width : first->rect.height); 00120 DLOG("original = %d\n", original); 00121 new_percent = (original + pixels) * (percent / original); 00122 difference = percent - new_percent; 00123 DLOG("difference = %f\n", difference); 00124 DLOG("new percent = %f\n", new_percent); 00125 first->percent = new_percent; 00126 00127 // calculate the new percentage for the second container 00128 double s_percent = second->percent; 00129 second->percent = s_percent + difference; 00130 DLOG("second->percent = %f\n", second->percent); 00131 00132 // now we must make sure that the sum of the percentages remain 1.0 00133 con_fix_percent(first->parent); 00134 00135 return 0; 00136 }