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Timothy Place
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min.progress: new example to demonstrate object box progress display ala stretch~.
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‎docs/min.progress.maxref.xml‎

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<?xml version='1.0' encoding='utf-8' standalone='yes'?>
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<!-- DO NOT EDIT THIS FILE ... YOU WILL LOSE YOUR WORK -->
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<c74object name='min.progress' category='interface'>
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<digest>Demonstrate display of a progress bar</digest>
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<description>Demonstrate display of a progress bar. </description>
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<!--METADATA-->
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<metadatalist>
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<metadata name='author'>Cycling '74 </metadata>
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<metadata name='tag'>interface</metadata>
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</metadatalist>
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<!--ARGUMENTS-->
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<objarglist>
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</objarglist>
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<!--MESSAGES-->
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<methodlist>
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<method name='bang'>
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<digest>Start process</digest>
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<description>Start process. </description>
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</method>
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</methodlist>
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<!--ATTRIBUTES-->
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<attributelist>
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<attribute name='duration' get='1' set='1' type='float64' size='1' >
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<digest>Duration of the process</digest>
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<description>Duration of the process. </description>
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</attribute>
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</attributelist>
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<!--RELATED-->
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<seealsolist>
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<seealso name='stretch~' />
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</seealsolist>
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</c74object>

‎help/min.progress.maxhelp‎

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{
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"patcher" : {
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"fileversion" : 1,
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"appversion" : {
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"major" : 8,
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"minor" : 1,
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"revision" : 5,
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"architecture" : "x64",
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"modernui" : 1
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}
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,
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"classnamespace" : "box",
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"rect" : [ 59.0, 104.0, 640.0, 480.0 ],
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"bglocked" : 0,
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"openinpresentation" : 0,
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"default_fontsize" : 12.0,
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"default_fontface" : 0,
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"default_fontname" : "Arial",
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"gridonopen" : 1,
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"gridsize" : [ 15.0, 15.0 ],
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"gridsnaponopen" : 1,
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"objectsnaponopen" : 1,
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"statusbarvisible" : 2,
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"toolbarvisible" : 1,
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"lefttoolbarpinned" : 0,
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"toptoolbarpinned" : 0,
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"righttoolbarpinned" : 0,
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"bottomtoolbarpinned" : 0,
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"toolbars_unpinned_last_save" : 0,
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"tallnewobj" : 0,
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"boxanimatetime" : 200,
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"enablehscroll" : 1,
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"enablevscroll" : 1,
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"devicewidth" : 0.0,
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"description" : "",
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"digest" : "",
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"tags" : "",
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"style" : "",
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"subpatcher_template" : "",
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"assistshowspatchername" : 0,
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"boxes" : [ {
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"box" : {
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"id" : "obj-3",
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"maxclass" : "button",
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"numinlets" : 1,
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"numoutlets" : 1,
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"outlettype" : [ "bang" ],
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"parameter_enable" : 0,
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"patching_rect" : [ 245.0, 138.0, 24.0, 24.0 ]
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}
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}
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, {
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"box" : {
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"id" : "obj-1",
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"maxclass" : "newobj",
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"numinlets" : 1,
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"numoutlets" : 0,
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"patching_rect" : [ 274.0, 193.0, 78.0, 22.0 ],
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"text" : "min.progress"
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}
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}
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],
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"lines" : [ {
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"patchline" : {
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"destination" : [ "obj-1", 0 ],
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"source" : [ "obj-3", 0 ]
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}
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}
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],
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"dependency_cache" : [ {
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"name" : "min.progress.mxo",
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"type" : "iLaX"
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}
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],
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"autosave" : 0
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}
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}

‎source/min-api‎

‎source/projects/min.progress/CMakeLists.txt‎

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# Copyright 2018 The Min-DevKit Authors. All rights reserved.
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# Use of this source code is governed by the MIT License found in the License.md file.
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cmake_minimum_required(VERSION 3.0)
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set(C74_MIN_API_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../min-api)
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include(${C74_MIN_API_DIR}/script/min-pretarget.cmake)
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#############################################################
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# MAX EXTERNAL
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#############################################################
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include_directories(
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"${C74_INCLUDES}"
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)
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set( SOURCE_FILES
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${PROJECT_NAME}.cpp
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)
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add_library(
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${PROJECT_NAME}
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MODULE
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${SOURCE_FILES}
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)
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include(${C74_MIN_API_DIR}/script/min-posttarget.cmake)
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#############################################################
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# UNIT TEST
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#############################################################
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include(${C74_MIN_API_DIR}/test/min-object-unittest.cmake)

‎source/projects/min.progress/min.progress.cpp‎

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/// @file
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/// @ingroup minexamples
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/// @copyright Copyright 2020 The Min-DevKit Authors. All rights reserved.
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/// @license Use of this source code is governed by the MIT License found in the License.md file.
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#include "c74_min.h"
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using namespace c74::min;
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class progress : public object<progress> {
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private:
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number m_current_progress {};
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number m_stepsize {};
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public:
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MIN_DESCRIPTION { "Demonstrate display of a progress bar." };
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MIN_TAGS { "interface" };
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MIN_AUTHOR { "Cycling '74" };
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MIN_RELATED { "stretch~" };
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inlet<> m_inlet { this, "(list) values to convolve" };
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attribute<number> m_duration { this, "duration", 3000.0, description {"Duration of the process."} };
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message<> m_bang { this, "bang", "Start process.",
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MIN_FUNCTION {
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m_current_progress = 0.0;
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m_stepsize = 1.0 / m_duration;
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auto b = box();
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b("startprogress", &m_current_progress);
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m_timer.delay(1.0);
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return {};
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}
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};
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timer<timer_options::defer_delivery> m_timer { this, MIN_FUNCTION {
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if (m_current_progress >= 1.0) {
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auto b = box();
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b("stopprogress");
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}
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else {
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m_current_progress += m_stepsize;
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m_timer.delay(1.0);
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}
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return {};
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}};
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};
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MIN_EXTERNAL(progress);

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