joachim/openwebrx-clone
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fix scrolling for canvas background and bookmarks. i hope that's all

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now.
This commit is contained in:
Jakob Ketterl 2019-11-01 19:48:08 +01:00
parent 9f6a4891ed
commit 5fdffb5e0c
3 changed files with 39 additions and 30 deletions
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15
htdocs/css/openwebrx.css
View File

@ -258,16 +258,20 @@ input[type=range]:focus::-ms-fill-upper
border-top-color: #0F0;
}
#webrx-canvas-container
{
#webrx-canvas-background {
flex-grow: 1;
position: relative;
overflow: hidden;
background-image: url('../gfx/openwebrx-background-cool-blue.png');
background-repeat: no-repeat;
background-color: #1e5f7f;
background-size: cover;
}
#webrx-canvas-container
{
position: relative;
overflow: hidden;
cursor: crosshair;
height: 100%;
}
#webrx-canvas-container canvas
@ -276,7 +280,8 @@ input[type=range]:focus::-ms-fill-upper
border-style: none;
image-rendering: crisp-edges;
image-rendering: -webkit-optimize-contrast;
/*transition: left 200ms, width 200ms;*/
width: 100%;
height: 200px;
}
#openwebrx-mathbox-container

6
htdocs/index.html
View File

@ -45,8 +45,10 @@
</div>
</div>
<div id="openwebrx-mathbox-container"> </div>
<div id="webrx-canvas-container">
<!-- add canvas here by javascript -->
<div id="webrx-canvas-background">
<div id="webrx-canvas-container">
<!-- add canvas here by javascript -->
</div>
</div>
<div id="openwebrx-panels-container">
<div id="openwebrx-panels-container-left">

48
htdocs/openwebrx.js
View File

@ -563,6 +563,10 @@ function demodulator_set_offset_frequency(which, to_what) {
$("#webrx-actual-freq").html(format_frequency("{x} MHz", center_freq + to_what, 1e6, 4));
}
function waterfallWidth() {
return $('body').width();
}
// ========================================================
// =================== SCALE ROUTINES ===================
@ -602,7 +606,7 @@ function scale_canvas_mousedown(evt) {
function scale_offset_freq_from_px(x, visible_range) {
if (typeof visible_range === "undefined") visible_range = get_visible_freq_range();
return (visible_range.start + visible_range.bw * (x / canvas_container.clientWidth)) - center_freq;
return (visible_range.start + visible_range.bw * (x / waterfallWidth())) - center_freq;
}
function scale_canvas_mousemove(evt) {
@ -643,20 +647,20 @@ function scale_canvas_mouseup(evt) {
}
function scale_px_from_freq(f, range) {
return Math.round(((f - range.start) / range.bw) * canvas_container.clientWidth);
return Math.round(((f - range.start) / range.bw) * waterfallWidth());
}
function get_visible_freq_range() {
var out = {};
var fcalc = function (x) {
var canvasWidth = canvas_container.clientWidth * zoom_levels[zoom_level];
var canvasWidth = waterfallWidth() * zoom_levels[zoom_level];
return Math.round(((-zoom_offset_px + x) / canvasWidth) * bandwidth) + (center_freq - bandwidth / 2);
};
out.start = fcalc(0);
out.center = fcalc(canvas_container.clientWidth / 2);
out.end = fcalc(canvas_container.clientWidth);
out.center = fcalc(waterfallWidth() / 2);
out.end = fcalc(waterfallWidth());
out.bw = out.end - out.start;
out.hps = out.bw / canvas_container.clientWidth;
out.hps = out.bw / waterfallWidth();
return out;
}
@ -732,7 +736,7 @@ function get_scale_mark_spacing(range) {
var out = {};
var fcalc = function (freq) {
out.numlarge = (range.bw / freq);
out.large = canvas_container.clientWidth / out.numlarge; //distance between large markers (these have text)
out.large = waterfallWidth() / out.numlarge; //distance between large markers (these have text)
out.ratio = 5; //(ratio-1) small markers exist per large marker
out.small = out.large / out.ratio; //distance between small markers
if (out.small < scale_min_space_bw_small_markers) return false;
@ -891,8 +895,8 @@ function canvas_mousemove(evt) {
var deltaX = canvas_drag_last_x - evt.pageX;
var dpx = range.hps * deltaX;
if (
!(zoom_center_rel + dpx > (bandwidth / 2 - canvas_container.clientWidth * (1 - zoom_center_where) * range.hps)) &&
!(zoom_center_rel + dpx < -bandwidth / 2 + canvas_container.clientWidth * zoom_center_where * range.hps)
!(zoom_center_rel + dpx > (bandwidth / 2 - waterfallWidth() * (1 - zoom_center_where) * range.hps)) &&
!(zoom_center_rel + dpx < -bandwidth / 2 + waterfallWidth() * zoom_center_where * range.hps)
) {
zoom_center_rel += dpx;
}
@ -929,14 +933,18 @@ function canvas_end_drag() {
}
function zoom_center_where_calc(screenposX) {
//return (screenposX-(window.innerWidth-canvas_container.clientWidth))/canvas_container.clientWidth;
return screenposX / canvas_container.clientWidth;
return screenposX / waterfallWidth();
}
function get_relative_x(evt) {
var relativeX = (evt.offsetX) ? evt.offsetX : evt.layerX;
var relativeX = evt.offsetX || evt.layerX;
if ($(evt.target).closest(canvas_container).length) return relativeX;
// compensate for the frequency scale, since that is not resized by the browser.
var relatives = $(evt.target).closest('#openwebrx-frequency-container').map(function(){
return evt.pageX - this.offsetLeft;
});
if (relatives.length) relativeX = relatives[0];
return relativeX - zoom_offset_px;
}
@ -993,7 +1001,7 @@ function zoom_set(level) {
if (!(level >= 0 && level <= zoom_levels.length - 1)) return;
level = parseInt(level);
zoom_level = level;
//zoom_center_rel=canvas_get_freq_offset(-canvases[0].offsetLeft+canvas_container.clientWidth/2); //zoom to screen center instead of demod envelope
//zoom_center_rel=canvas_get_freq_offset(-canvases[0].offsetLeft+waterfallWidth()/2); //zoom to screen center instead of demod envelope
zoom_center_rel = demodulators[0].offset_frequency;
zoom_center_where = 0.5 + (zoom_center_rel / bandwidth); //this is a kind of hack
resize_canvases(true);
@ -1002,13 +1010,12 @@ function zoom_set(level) {
}
function zoom_calc() {
var winsize = canvas_container.clientWidth;
var winsize = waterfallWidth();
var canvases_new_width = winsize * zoom_levels[zoom_level];
zoom_offset_px = -((canvases_new_width * (0.5 + zoom_center_rel / bandwidth)) - (winsize * zoom_center_where));
if (zoom_offset_px > 0) zoom_offset_px = 0;
if (zoom_offset_px < winsize - canvases_new_width)
zoom_offset_px = winsize - canvases_new_width;
//console.log("zoom_calc || zopx:"+zoom_offset_px.toString()+ " maxoff:"+(winsize-canvases_new_width).toString()+" relval:"+(0.5+zoom_center_rel/bandwidth).toString() );
}
var networkSpeedMeasurement;
@ -1572,9 +1579,6 @@ function add_canvas() {
new_canvas.width = fft_size;
new_canvas.height = canvas_default_height;
canvas_actual_line = canvas_default_height - 1;
new_canvas.style.width = (canvas_container.clientWidth * zoom_levels[zoom_level]).toString() + "px";
new_canvas.style.left = zoom_offset_px.toString() + "px";
new_canvas.style.height = canvas_default_height.toString() + "px";
new_canvas.openwebrx_top = (-canvas_default_height + 1);
new_canvas.style.top = new_canvas.openwebrx_top.toString() + "px";
canvas_context = new_canvas.getContext("2d");
@ -1614,11 +1618,9 @@ function resize_canvases(zoom) {
if (typeof zoom === "undefined") zoom = false;
if (!zoom) mkzoomlevels();
zoom_calc();
var new_width = (canvas_container.clientWidth * zoom_levels[zoom_level]).toString() + "px";
var zoom_value = zoom_offset_px.toString() + "px";
canvases.forEach(function (p) {
p.style.width = new_width;
p.style.left = zoom_value;
$('#webrx-canvas-container').css({
width: waterfallWidth() * zoom_levels[zoom_level] + 'px',
left: zoom_offset_px + "px"
});
}