mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-10 19:00:08 +00:00
622 lines
15 KiB
JavaScript
622 lines
15 KiB
JavaScript
/* Helper functions for debugging */
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var logDiv = null;
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function log(str) {
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if (!logDiv) {
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logDiv = document.createElement('div');
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document.body.appendChild(logDiv);
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logDiv.style["position"] = "absolute";
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logDiv.style["right"] = "0px";
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}
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logDiv.appendChild(document.createTextNode(str));
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logDiv.appendChild(document.createElement('br'));
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}
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var base64_val = [
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255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
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255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
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255,255,255,255,255,255,255,255,255,255,255, 62,255,255,255, 63,
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52, 53, 54, 55, 56, 57, 58, 59, 60, 61,255,255,255, 0,255,255,
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255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
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15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,255,255,255,255,255,
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255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
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41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,255,255,255,255,255
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]
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function base64_8(str, index) {
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var v =
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(base64_val[str.charCodeAt(index)]) +
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(base64_val[str.charCodeAt(index+1)] << 6);
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return v;
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}
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function base64_16(str, index) {
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var v =
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(base64_val[str.charCodeAt(index)]) +
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(base64_val[str.charCodeAt(index+1)] << 6) +
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(base64_val[str.charCodeAt(index+2)] << 12);
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return v;
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}
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function base64_16s(str, index) {
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var v = base64_16(str, index);
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if (v > 32767)
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return v - 65536;
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else
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return v;
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}
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function base64_24(str, index) {
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var v =
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(base64_val[str.charCodeAt(index)]) +
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(base64_val[str.charCodeAt(index+1)] << 6) +
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(base64_val[str.charCodeAt(index+2)] << 12) +
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(base64_val[str.charCodeAt(index+3)] << 18);
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return v;
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}
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function base64_32(str, index) {
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var v =
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(base64_val[str.charCodeAt(index)]) +
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(base64_val[str.charCodeAt(index+1)] << 6) +
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(base64_val[str.charCodeAt(index+2)] << 12) +
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(base64_val[str.charCodeAt(index+3)] << 18) +
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(base64_val[str.charCodeAt(index+4)] << 24) +
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(base64_val[str.charCodeAt(index+5)] << 30);
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return v;
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}
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function createXHR()
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{
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try { return new XMLHttpRequest(); } catch(e) {}
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try { return new ActiveXObject("Msxml2.XMLHTTP.6.0"); } catch (e) {}
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try { return new ActiveXObject("Msxml2.XMLHTTP.3.0"); } catch (e) {}
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try { return new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) {}
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try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch (e) {}
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return null;
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}
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var grab = new Object();
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grab.window = null;
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grab.owner_events = false;
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grab.time = 0;
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grab.implicit = false;
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var last_serial = 0;
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var last_x = 0;
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var last_y = 0;
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var last_state;
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var real_window_with_mouse = 0;
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var window_with_mouse = 0;
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var surfaces = {};
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var outstanding_commands = new Array();
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var input_socket = null;
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function initContext(canvas, x, y, id)
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{
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canvas.surface_id = id;
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canvas.style["position"] = "absolute";
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canvas.style["left"] = x + "px";
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canvas.style["top"] = y + "px";
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canvas.style["display"] = "none";
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var context = canvas.getContext("2d");
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context.globalCompositeOperation = "src-over";
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context.fillRect(0, 0, canvas.width, canvas.height);
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document.body.appendChild(canvas);
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return context;
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}
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var GDK_GRAB_SUCCESS = 0;
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var GDK_GRAB_ALREADY_GRABBED = 1;
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var GDK_GRAB_INVALID_TIME = 2;
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var GDK_CROSSING_NORMAL = 0;
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var GDK_CROSSING_GRAB = 1;
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var GDK_CROSSING_UNGRAB = 2;
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// GdkModifierType
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var GDK_SHIFT_MASK = 1 << 0;
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var GDK_LOCK_MASK = 1 << 1;
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var GDK_CONTROL_MASK = 1 << 2;
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var GDK_MOD1_MASK = 1 << 3;
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var GDK_MOD2_MASK = 1 << 4;
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var GDK_MOD3_MASK = 1 << 5;
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var GDK_MOD4_MASK = 1 << 6;
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var GDK_MOD5_MASK = 1 << 7;
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var GDK_BUTTON1_MASK = 1 << 8;
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var GDK_BUTTON2_MASK = 1 << 9;
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var GDK_BUTTON3_MASK = 1 << 10;
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var GDK_BUTTON4_MASK = 1 << 11;
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var GDK_BUTTON5_MASK = 1 << 12;
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var GDK_SUPER_MASK = 1 << 26;
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var GDK_HYPER_MASK = 1 << 27;
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var GDK_META_MASK = 1 << 28;
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var GDK_RELEASE_MASK = 1 << 30;
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function getButtonMask (button) {
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if (button == 1)
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return GDK_BUTTON1_MASK;
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if (button == 2)
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return GDK_BUTTON2_MASK;
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if (button == 3)
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return GDK_BUTTON3_MASK;
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if (button == 4)
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return GDK_BUTTON4_MASK;
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if (button == 5)
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return GDK_BUTTON5_MASK;
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return 0;
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}
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function handleCommands(cmd_obj)
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{
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var cmd = cmd_obj.data;
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var i = cmd_obj.pos;
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while (i < cmd.length) {
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var command = cmd[i++];
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last_serial = base64_32(cmd, i);
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i = i + 6;
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switch (command) {
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/* create new surface */
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case 's':
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var id = base64_16(cmd, i);
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i = i + 3;
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var x = base64_16(cmd, i);
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i = i + 3;
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var y = base64_16(cmd, i);
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i = i + 3;
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var w = base64_16(cmd, i);
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i = i + 3;
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var h = base64_16(cmd, i);
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i = i + 3;
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var surface = document.createElement("canvas");
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surface.width = w;
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surface.height = h;
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surfaces[id] = initContext(surface, x, y, id);
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break;
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/* show a surface */
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case 'S':
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var id = base64_16(cmd, i);
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i = i + 3;
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surfaces[id].canvas.style["display"] = "inline";
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break;
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/* hide a surface */
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case 'H':
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var id = base64_16(cmd, i);
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i = i + 3;
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surfaces[id].canvas.style["display"] = "none";
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break;
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/* delete surface */
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case 'd':
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var id = base64_16(cmd, i);
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i = i + 3;
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var canvas = surfaces[id].canvas;
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delete surfaces[id];
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canvas.parentNode.removeChild(canvas);
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break;
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/* move a surface */
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case 'm':
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var id = base64_16(cmd, i);
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i = i + 3;
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var x = base64_16(cmd, i);
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i = i + 3;
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var y = base64_16(cmd, i);
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i = i + 3;
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surfaces[id].canvas.style["left"] = x + "px";
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surfaces[id].canvas.style["top"] = y + "px";
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break;
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/* resize a surface */
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case 'r':
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var id = base64_16(cmd, i);
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i = i + 3;
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var w = base64_16(cmd, i);
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i = i + 3;
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var h = base64_16(cmd, i);
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i = i + 3;
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surfaces[id].canvas.width = w;
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surfaces[id].canvas.height = h;
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break;
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/* put image data surface */
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case 'i':
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var id = base64_16(cmd, i);
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i = i + 3;
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var x = base64_16(cmd, i);
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i = i + 3;
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var y = base64_16(cmd, i);
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i = i + 3;
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var size = base64_32(cmd, i);
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i = i + 6;
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var url = cmd.slice(i, i + size);
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i = i + size;
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var img = new Image();
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img.src = url;
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if (img.complete) {
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surfaces[id].drawImage(img, x, y);
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} else {
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cmd_obj.pos = i;
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img.onload = function() { surfaces[id].drawImage(img, x, y); handleOutstanding(); };
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return false;
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}
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break;
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/* copy rects */
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case 'b':
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var id = base64_16(cmd, i);
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i = i + 3;
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var nrects = base64_16(cmd, i);
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i = i + 3;
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var context = surfaces[id];
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context.save();
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var minx;
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var miny;
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var maxx;
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var maxy;
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for (var r = 0; r < nrects; r++) {
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var x = base64_16(cmd, i);
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i = i + 3;
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var y = base64_16(cmd, i);
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i = i + 3;
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var w = base64_16(cmd, i);
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i = i + 3;
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var h = base64_16(cmd, i);
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i = i + 3;
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context.rect(x, y, w, h);
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if (r == 0) {
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minx = x;
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miny = y;
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maxx = x + w;
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maxy = y + h;
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} else {
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if (x < minx)
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minx = x;
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if (y < miny)
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miny = y;
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if (x + w > maxx)
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maxx = x + w;
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if (y + h > maxy)
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maxy = y + h;
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}
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}
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context.clip();
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var dx = base64_16s(cmd, i);
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i = i + 3;
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var dy = base64_16s(cmd, i);
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i = i + 3;
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context.drawImage(context.canvas,
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minx - dx, miny - dy, maxx - minx, maxy - miny,
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minx, miny, maxx - minx, maxy - miny);
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context.restore();
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break;
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case 'q': // Query pointer
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var id = base64_16(cmd, i);
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i = i + 3;
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var pos = getPositionsFromAbsCoord(last_x, last_y, id);
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send_input ("q", [pos.root_x, pos.root_y, pos.win_x, pos.win_x, window_with_mouse]);
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break;
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case 'g': // Grab
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var id = base64_16(cmd, i);
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i = i + 3;
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var owner_events = cmd[i++] == '1';
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var time = base64_32(cmd, i);
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i = i + 6;
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if (grab.window != null) {
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/* Previous grab, compare times */
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if (time != 0 && grab.time != 0 &&
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time > grab.time) {
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send_input ("g", [GDK_GRAB_INVALID_TIME]);
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break;
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}
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}
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doGrab(id, owner_events, time, false);
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send_input ("g", [GDK_GRAB_SUCCESS]);
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break;
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case 'u': // Ungrab
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var time = base64_32(cmd, i);
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i = i + 6;
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send_input ("u", []);
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if (grab.window != null) {
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if (grab.time == 0 || time == 0 ||
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grab.time < time)
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grab.window = null;
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}
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break;
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default:
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alert("Unknown op " + command);
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}
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}
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return true;
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}
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function handleOutstanding()
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{
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while (outstanding_commands.length > 0) {
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var cmd = outstanding_commands.shift();
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if (!handleCommands(cmd)) {
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outstanding_commands.unshift(cmd);
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return;
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}
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}
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}
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function handleLoad(event)
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{
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var cmd_obj = {};
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cmd_obj.data = event.target.responseText;
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cmd_obj.pos = 0;
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outstanding_commands.push(cmd_obj);
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if (outstanding_commands.length == 1) {
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handleOutstanding();
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}
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}
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function get_surface_id(ev) {
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var id = ev.target.surface_id;
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if (id != undefined)
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return id;
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return 0;
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}
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function send_input(cmd, args)
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{
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if (input_socket != null) {
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input_socket.send(cmd + ([last_serial].concat(args)).join(","));
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}
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}
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function get_document_coordinates(element)
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{
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var res = new Object();
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res.x = element.offsetLeft;
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res.y = element.offsetTop;
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var offsetParent = element.offsetParent;
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while (offsetParent != null) {
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res.x += offsetParent.offsetLeft;
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res.y += offsetParent.offsetTop;
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offsetParent = offsetParent.offsetParent;
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}
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return res;
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}
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function getPositionsFromAbsCoord(absX, absY, relativeId) {
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var res = Object();
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res.root_x = absX;
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res.root_y = absY;
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res.win_x = absX;
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res.win_y = absY;
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if (relativeId != 0) {
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var pos = get_document_coordinates(surfaces[relativeId].canvas);
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res.win_x = res.win_x - pos.x;
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res.win_y = res.win_y - pos.y;
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}
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return res;
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}
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function getPositionsFromEvent(ev, relativeId) {
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var res = getPositionsFromAbsCoord(ev.pageX, ev.pageY, relativeId);
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last_x = res.root_x;
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last_y = res.root_y;
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return res;
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}
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function getEffectiveEventTarget (id) {
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if (grab.window != null) {
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if (!grab.owner_events)
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return grab.window;
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if (id == 0)
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return grab.window;
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}
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return id;
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}
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function on_mouse_move (ev) {
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var id = get_surface_id(ev);
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id = getEffectiveEventTarget (id);
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var pos = getPositionsFromEvent(ev, id);
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send_input ("m", [id, pos.root_x, pos.root_y, pos.win_x, pos.win_y, last_state, ev.timeStamp]);
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}
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function on_mouse_over (ev) {
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var id = get_surface_id(ev);
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real_window_with_mouse = id;
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id = getEffectiveEventTarget (id);
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var pos = getPositionsFromEvent(ev, id);
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window_with_mouse = id;
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if (window_with_mouse != 0) {
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send_input ("e", [id, pos.root_x, pos.root_y, pos.win_x, pos.win_y, last_state, ev.timeStamp, GDK_CROSSING_NORMAL]);
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}
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}
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function on_mouse_out (ev) {
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var id = get_surface_id(ev);
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var origId = id;
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id = getEffectiveEventTarget (id);
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var pos = getPositionsFromEvent(ev, id);
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if (id != 0) {
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send_input ("l", [id, pos.root_x, pos.root_y, pos.win_x, pos.win_y, last_state, ev.timeStamp, GDK_CROSSING_NORMAL]);
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}
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real_window_with_mouse = 0;
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window_with_mouse = 0;
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}
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function doGrab(id, owner_events, time, implicit) {
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var pos;
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if (window_with_mouse != id) {
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if (window_with_mouse != 0) {
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pos = getPositionsFromAbsCoord(last_x, last_y, window_with_mouse);
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send_input ("l", [window_with_mouse, pos.root_x, pos.root_y, pos.win_x, pos.win_y, last_state, time, GDK_CROSSING_GRAB]);
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}
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pos = getPositionsFromAbsCoord(last_x, last_y, id);
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send_input ("e", [id, pos.root_x, pos.root_y, pos.win_x, pos.win_y, last_state, time, GDK_CROSSING_GRAB]);
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window_with_mouse = id;
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}
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grab.window = id;
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grab.owner_events = owner_events;
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grab.time = time;
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grab.implicit = implicit;
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}
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function doUngrab(time) {
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var pos;
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if (real_window_with_mouse != window_with_mouse) {
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if (window_with_mouse != 0) {
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pos = getPositionsFromAbsCoord(last_x, last_y, window_with_mouse);
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send_input ("l", [window_with_mouse, pos.root_x, pos.root_y, pos.win_x, pos.win_y, last_state, time, GDK_CROSSING_UNGRAB]);
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}
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if (real_window_with_mouse != 0) {
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pos = getPositionsFromAbsCoord(last_x, last_y, id);
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send_input ("e", [real_window_with_mouse, pos.root_x, pos.root_y, pos.win_x, pos.win_y, last_state, time, GDK_CROSSING_UNGRAB]);
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}
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window_with_mouse = real_window_with_mouse;
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}
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grab.window = null;
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}
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function on_mouse_down (ev) {
|
|
var id = get_surface_id(ev);
|
|
id = getEffectiveEventTarget (id);
|
|
var pos = getPositionsFromEvent(ev, id);
|
|
if (grab.window != null)
|
|
doGrab (id, false, ev.timeStamp, true);
|
|
var button = ev.button + 1;
|
|
last_state = last_state | getButtonMask (button);
|
|
send_input ("b", [id, pos.root_x, pos.root_y, pos.win_x, pos.win_y, last_state, ev.timeStamp, button]);
|
|
}
|
|
|
|
function on_mouse_up (ev) {
|
|
var id = get_surface_id(ev);
|
|
id = getEffectiveEventTarget (id);
|
|
var pos = getPositionsFromEvent(ev, id);
|
|
var button = ev.button + 1;
|
|
last_state = last_state & ~getButtonMask (button);
|
|
send_input ("B", [id, pos.root_x, pos.root_y, pos.win_x, pos.win_y, last_state, , ev.timeStamp, button]);
|
|
|
|
if (grab.window != null && grab.implicit)
|
|
doUngrab(time);
|
|
}
|
|
|
|
var last_key_down = 0;
|
|
function on_key_down (ev) {
|
|
var key_code = ev.keyCode;
|
|
if (key_code != last_key_down) {
|
|
send_input ("k", [key_code, ev.timeStamp]);
|
|
last_key_down = key_code;
|
|
}
|
|
}
|
|
|
|
function on_key_up (ev) {
|
|
var key_code = ev.keyCode;
|
|
send_input ("K", [key_code, ev.timeStamp]);
|
|
last_key_down = 0;
|
|
}
|
|
|
|
function cancel_event(ev)
|
|
{
|
|
ev = ev ? ev : window.event;
|
|
if (ev.stopPropagation)
|
|
ev.stopPropagation();
|
|
if (ev.preventDefault)
|
|
ev.preventDefault();
|
|
ev.cancelBubble = true;
|
|
ev.cancel = true;
|
|
ev.returnValue = false;
|
|
return false;
|
|
}
|
|
|
|
function on_mouse_wheel(ev)
|
|
{
|
|
ev = ev ? ev : window.event;
|
|
|
|
var id = get_surface_id(ev);
|
|
var pos = getPositionsFromEvent(ev, id);
|
|
|
|
var offset = ev.detail ? ev.detail : ev.wheelDelta;
|
|
var dir = 0;
|
|
if (offset > 0)
|
|
dir = 1;
|
|
send_input ("s", [id, pos.root_x, pos.root_y, pos.win_x, pos.win_y, last_state, ev.timeStamp, dir]);
|
|
|
|
return cancel_event(ev);
|
|
}
|
|
|
|
function connect()
|
|
{
|
|
var xhr = createXHR();
|
|
if (xhr) {
|
|
if (typeof xhr.multipart == 'undefined') {
|
|
alert("Sorry, this example only works in browsers that support multipart.");
|
|
return;
|
|
}
|
|
|
|
xhr.multipart = true;
|
|
xhr.open("GET", "/output", true);
|
|
xhr.onload = handleLoad;
|
|
xhr.send(null);
|
|
}
|
|
|
|
if ("WebSocket" in window) {
|
|
var loc = window.location.toString().replace("http:", "ws:");
|
|
loc = loc.substr(0, loc.lastIndexOf('/')) + "/input";
|
|
var ws = new WebSocket(loc, "broadway");
|
|
ws.onopen = function() {
|
|
input_socket = ws;
|
|
};
|
|
ws.onclose = function() {
|
|
input_socket = null;
|
|
};
|
|
} else {
|
|
alert("WebSocket not supported, input will not work!");
|
|
}
|
|
document.oncontextmenu = function () { return false; };
|
|
document.onmousemove = on_mouse_move;
|
|
document.onmouseover = on_mouse_over;
|
|
document.onmouseout = on_mouse_out;
|
|
document.onmousedown = on_mouse_down;
|
|
document.onmouseup = on_mouse_up;
|
|
document.onkeydown = on_key_down;
|
|
document.onkeyup = on_key_up;
|
|
|
|
if (document.addEventListener) {
|
|
document.addEventListener('DOMMouseScroll', on_mouse_wheel, false);
|
|
document.addEventListener('mousewheel', on_mouse_wheel, false);
|
|
} else if (document.attachEvent) {
|
|
element.attachEvent("onmousewheel", on_mouse_wheel);
|
|
}
|
|
|
|
}
|