mirror of
https://github.com/subsurface/subsurface.git
synced 2025-01-19 14:25:27 +00:00
Skeleton code for a non-blocking UI thread for downloading dives from the DC
This is the skeleton code for a non-blocking ui-thread
It already creates the first-thread ( 'do not block the ui' )
and the second thread ('download from the dive computer')
We can in the future merge both in the same place - I didn't
want to do that now because the download function is written
in the libdivecomputer.c code, and I cant just transform that
to a QThread and use signals, so I used two threads for that.
Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
This commit is contained in:
Tomaz Canabrava
parent
15bb4fccbb
commit
c7a5d0490f
8 changed files with 249 additions and 89 deletions
3
Makefile
3
Makefile
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@ -45,6 +45,7 @@ HEADERS = \
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qt-ui/profilegraphics.h \
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qt-ui/globe.h \
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qt-ui/kmessagewidget.h \
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qt-ui/downloadfromdivecomputer.h \
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SOURCES = \
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@ -64,6 +65,7 @@ SOURCES = \
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sha1.c \
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statistics.c \
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time.c \
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libdivecomputer.c \
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qt-gui.cpp \
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qt-ui/addcylinderdialog.cpp \
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qt-ui/addweightsystemdialog.cpp \
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@ -77,6 +79,7 @@ SOURCES = \
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qt-ui/profilegraphics.cpp \
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qt-ui/globe.cpp \
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qt-ui/kmessagewidget.cpp \
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qt-ui/downloadfromdivecomputer.cpp \
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$(RESFILE)
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@ -3,24 +3,12 @@
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#include "dive.h"
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#include "divelist.h"
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#include "display.h"
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#if USE_GTK_UI
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#include "display-gtk.h"
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#include "callbacks-gtk.h"
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#endif
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#include "libdivecomputer.h"
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const char *default_dive_computer_vendor;
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const char *default_dive_computer_product;
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const char *default_dive_computer_device;
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#if USE_GTK_UI
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static gboolean force_download;
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static gboolean prefer_downloaded;
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OPTIONCALLBACK(force_toggle, force_download)
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OPTIONCALLBACK(prefer_dl_toggle, prefer_downloaded)
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#endif
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struct product {
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const char *product;
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dc_descriptor_t *descriptor;
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@ -1,5 +1,4 @@
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#include <stdio.h>
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#include <pthread.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <glib/gi18n.h>
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@ -21,8 +20,9 @@
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#define NOT_FROG
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#endif
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static const char *progress_bar_text = "";
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static double progress_bar_fraction = 0.0;
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const char *progress_bar_text = "";
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double progress_bar_fraction = 0.0;
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static int stoptime, stopdepth, ndl, po2, cns;
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static gboolean in_deco, first_temp_is_air;
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@ -686,7 +686,7 @@ static const char *do_device_import(device_data_t *data)
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return NULL;
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}
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static const char *do_libdivecomputer_import(device_data_t *data)
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const char *do_libdivecomputer_import(device_data_t *data)
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{
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dc_status_t rc;
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const char *err;
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@ -709,70 +709,3 @@ static const char *do_libdivecomputer_import(device_data_t *data)
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dc_context_free(data->context);
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return err;
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}
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#if USE_GTK_UI
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static void *pthread_wrapper(void *_data)
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{
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device_data_t *data = _data;
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const char *err_string = do_libdivecomputer_import(data);
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import_thread_done = 1;
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return (void *)err_string;
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}
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/* this simply ends the dialog without a response and asks not to be fired again
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* as we set this function up in every loop while uemis_download is waiting for
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* the download to finish */
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static gboolean timeout_func(gpointer _data)
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{
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GtkDialog *dialog = _data;
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if (!import_thread_cancelled)
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gtk_dialog_response(dialog, GTK_RESPONSE_NONE);
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return FALSE;
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}
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GError *do_import(device_data_t *data)
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{
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pthread_t pthread;
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void *retval;
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GtkDialog *dialog = data->dialog;
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/* I'm sure there is some better interface for waiting on a thread in a UI main loop */
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import_thread_done = 0;
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progress_bar_text = "";
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progress_bar_fraction = 0.0;
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pthread_create(&pthread, NULL, pthread_wrapper, data);
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/* loop here until the import is done or was cancelled by the user;
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* in order to get control back from gtk we register a timeout function
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* that ends the dialog with no response every 100ms; we then update the
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* progressbar and setup the timeout again - unless of course the user
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* pressed cancel, in which case we just wait for the download thread
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* to react to that and exit */
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while (!import_thread_done) {
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if (!import_thread_cancelled) {
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int result;
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g_timeout_add(100, timeout_func, dialog);
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update_progressbar(&data->progress, progress_bar_fraction);
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update_progressbar_text(&data->progress, progress_bar_text);
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result = gtk_dialog_run(dialog);
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switch (result) {
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case GTK_RESPONSE_CANCEL:
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import_thread_cancelled = TRUE;
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progress_bar_text = _("Cancelled...");
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break;
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default:
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/* nothing */
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break;
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}
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} else {
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update_progressbar(&data->progress, progress_bar_fraction);
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update_progressbar_text(&data->progress, progress_bar_text);
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usleep(100000);
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}
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}
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if (pthread_join(pthread, &retval) < 0)
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retval = _("Odd pthread error return");
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if (retval)
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return error(retval, data->vendor, data->product, data->devname);
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return NULL;
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}
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#endif
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@ -1,6 +1,11 @@
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#ifndef LIBDIVECOMPUTER_H
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#define LIBDIVECOMPUTER_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* libdivecomputer */
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#include <libdivecomputer/version.h>
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#include <libdivecomputer/device.h>
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@ -20,12 +25,12 @@ typedef struct device_data_t {
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dc_context_t *context;
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int preexisting;
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gboolean force_download;
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#if USE_GTK_UI
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progressbar_t progress;
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GtkDialog *dialog;
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#endif
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} device_data_t;
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extern GError *do_import(device_data_t *data);
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const char *do_libdivecomputer_import(device_data_t *data);
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#ifdef __cplusplus
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}
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#endif
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#endif
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73
qt-ui/downloadfromdivecomputer.cpp
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73
qt-ui/downloadfromdivecomputer.cpp
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@ -0,0 +1,73 @@
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#include "downloadfromdivecomputer.h"
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#include "ui_downloadfromdivecomputer.h"
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#include "../libdivecomputer.h"
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#include <QThread>
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#include <QDebug>
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namespace DownloadFromDcGlobal{
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const char *err_string;
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};
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extern const char *progress_bar_text;
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extern double progress_bar_fraction;
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DownloadFromDCWidget::DownloadFromDCWidget(QWidget* parent, Qt::WindowFlags f) :
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QDialog(parent, f), ui(new Ui::DownloadFromDiveComputer), thread(0)
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{
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ui->setupUi(this);
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ui->progressBar->hide();
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ui->progressBar->setMinimum(0);
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ui->progressBar->setMaximum(100);
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}
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void DownloadFromDCWidget::on_cancel_clicked()
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{
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close();
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}
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void DownloadFromDCWidget::on_ok_clicked()
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{
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ui->progressBar->setValue(0);
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ui->progressBar->show();
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if(thread){
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thread->deleteLater();
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}
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device_data_t data;
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// still need to fill the data info here.
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thread = new InterfaceThread(this, &data);
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connect(thread, SIGNAL(updateInterface(int)), ui->progressBar, SLOT(setValue(int)), Qt::QueuedConnection); // Qt::QueuedConnection == threadsafe.
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connect(thread, SIGNAL(updateInterface(int)), this, SLOT(setValue(int)), Qt::QueuedConnection); // Qt::QueuedConnection == threadsafe.
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thread->start();
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}
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DownloadThread::DownloadThread(device_data_t* data): data(data)
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{
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}
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void DownloadThread::run()
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{
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do_libdivecomputer_import(data);
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qDebug() << "Download thread started";
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}
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InterfaceThread::InterfaceThread(QObject* parent, device_data_t* data): QThread(parent), data(data)
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{
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}
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void InterfaceThread::run()
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{
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DownloadThread *download = new DownloadThread(data);
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download->start();
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while(download->isRunning()){
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msleep(200);
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updateInterface(progress_bar_fraction *100);
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}
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updateInterface(100);
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}
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46
qt-ui/downloadfromdivecomputer.h
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46
qt-ui/downloadfromdivecomputer.h
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#ifndef DOWNLOADFROMDIVECOMPUTER_H
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#define DOWNLOADFROMDIVECOMPUTER_H
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#include <QDialog>
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#include <QThread>
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namespace Ui{
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class DownloadFromDiveComputer;
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}
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struct device_data_t;
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class DownloadThread : public QThread{
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Q_OBJECT
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public:
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explicit DownloadThread(device_data_t* data);
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virtual void run();
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private:
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device_data_t *data;
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};
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class InterfaceThread : public QThread{
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Q_OBJECT
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public:
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InterfaceThread(QObject *parent, device_data_t *data) ;
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virtual void run();
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Q_SIGNALS:
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void updateInterface(int value);
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private:
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device_data_t *data;
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};
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class DownloadFromDCWidget : public QDialog{
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Q_OBJECT
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public:
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explicit DownloadFromDCWidget(QWidget* parent = 0, Qt::WindowFlags f = 0);
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public slots:
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void on_ok_clicked();
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void on_cancel_clicked();
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private:
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Ui::DownloadFromDiveComputer *ui;
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InterfaceThread *thread;
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};
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#endif
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110
qt-ui/downloadfromdivecomputer.ui
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110
qt-ui/downloadfromdivecomputer.ui
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@ -0,0 +1,110 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<ui version="4.0">
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<class>DownloadFromDiveComputer</class>
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<widget class="QDialog" name="DownloadFromDiveComputer">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>331</width>
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<height>199</height>
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</rect>
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</property>
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<property name="windowTitle">
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<string>Form</string>
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</property>
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<layout class="QGridLayout" name="gridLayout">
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<item row="0" column="0">
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<widget class="QLabel" name="label">
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<property name="text">
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<string>Vendor</string>
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</property>
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</widget>
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</item>
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<item row="0" column="1" colspan="2">
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<widget class="QLabel" name="label_2">
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<property name="text">
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<string>Dive Computer</string>
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</property>
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</widget>
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</item>
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<item row="1" column="0">
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<widget class="QComboBox" name="vendor"/>
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</item>
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<item row="1" column="1" colspan="2">
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<widget class="QComboBox" name="diveComputerName"/>
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</item>
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<item row="2" column="0" colspan="3">
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<widget class="QLabel" name="label_3">
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<property name="text">
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<string>Device or Mount Point</string>
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</property>
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</widget>
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</item>
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<item row="3" column="0" colspan="2">
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<widget class="QLineEdit" name="mountPoint"/>
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</item>
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<item row="3" column="2">
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<widget class="QToolButton" name="search">
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<property name="text">
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<string>...</string>
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</property>
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</widget>
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</item>
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<item row="4" column="0" colspan="3">
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<widget class="QCheckBox" name="forceDownload">
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<property name="text">
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<string>Force download of all dives</string>
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</property>
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</widget>
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</item>
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<item row="5" column="0" colspan="3">
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<widget class="QCheckBox" name="preferDownloaded">
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<property name="text">
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<string>Always prefer downloaded dives</string>
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</property>
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</widget>
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</item>
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<item row="6" column="0" colspan="3">
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<layout class="QHBoxLayout" name="horizontalLayout">
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<item>
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<spacer name="horizontalSpacer">
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<property name="orientation">
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<enum>Qt::Horizontal</enum>
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</property>
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<property name="sizeHint" stdset="0">
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<size>
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<width>40</width>
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<height>20</height>
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</size>
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</property>
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</spacer>
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</item>
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<item>
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<widget class="QPushButton" name="ok">
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<property name="text">
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<string>OK</string>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QPushButton" name="cancel">
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<property name="text">
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<string>Cancel</string>
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</property>
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</widget>
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</item>
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</layout>
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</item>
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<item row="7" column="0" colspan="3">
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<widget class="QProgressBar" name="progressBar">
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<property name="value">
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<number>24</number>
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</property>
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</widget>
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</item>
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</layout>
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</widget>
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<resources/>
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<connections/>
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</ui>
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@ -25,6 +25,7 @@
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#include "../pref.h"
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#include "modeldelegates.h"
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#include "models.h"
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#include "downloadfromdivecomputer.h"
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static MainWindow* instance = 0;
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@ -160,7 +161,8 @@ void MainWindow::on_actionQuit_triggered()
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void MainWindow::on_actionDownloadDC_triggered()
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{
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qDebug("actionDownloadDC");
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DownloadFromDCWidget* downloadWidget = new DownloadFromDCWidget();
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downloadWidget->show();
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}
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void MainWindow::on_actionDownloadWeb_triggered()
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