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Extended slider events. Updated the demo to match. 

Actually reduced code size :)
ugfx_release_2.6
inmarket 2014-12-06 15:48:47 +10:00
parent 4931f39a0d
commit 5bf2b8678a
4 changed files with 148 additions and 66 deletions
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1
demos/modules/gwin/slider/gfxconf.h
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@ -56,6 +56,7 @@
#define GWIN_NEED_WINDOWMANAGER TRUE
#define GWIN_NEED_WIDGET TRUE
#define GWIN_NEED_SLIDER TRUE
#define GWIN_NEED_CONSOLE TRUE
/* Features for the GINPUT subsystem. */
#define GINPUT_NEED_MOUSE TRUE

33
demos/modules/gwin/slider/main.c
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@ -30,7 +30,7 @@
#include "gfx.h"
static GListener gl;
static GHandle ghSlider1, ghSlider2;
static GHandle ghSlider1, ghSlider2, ghConsole;
static void createWidgets(void) {
GWidgetInit wi;
@ -40,16 +40,24 @@ static void createWidgets(void) {
wi.g.show = TRUE;
// create Slider1
wi.g.y = 10; wi.g.x = 10; wi.g.width = 200; wi.g.height = 20; wi.text = "S1";
wi.g.y = 10; wi.g.x = 10; wi.g.width = gdispGetWidth()-20; wi.g.height = 20; wi.text = "S1";
ghSlider1 = gwinSliderCreate(0, &wi);
// create Slider2
wi.g.y = 40; wi.g.x = 10; wi.g.width = 20; wi.g.height = 200; wi.text = "S2";
wi.g.y = 40; wi.g.x = 10; wi.g.width = 20; wi.g.height = gdispGetHeight() - 50; wi.text = "S2";
ghSlider2 = gwinSliderCreate(0, &wi);
// Set slider 2 to return extended events
gwinSliderSendExtendedEvents(ghSlider2, TRUE);
// Console to display slider events
wi.g.y = 40; wi.g.x = 40; wi.g.width = gdispGetWidth()-50; wi.g.height = gdispGetHeight()-50;
ghConsole = gwinConsoleCreate(0, &wi.g);
}
int main(void) {
GEvent* pe;
GEventGWinSlider * pe;
const char * sAction;
// Initialize the display
gfxInit();
@ -61,21 +69,32 @@ int main(void) {
// create the widget
createWidgets();
gwinSetColor(ghConsole, Green);
gwinSetBgColor(ghConsole, White);
gwinClear(ghConsole);
// We want to listen for widget events
geventListenerInit(&gl);
gwinAttachListener(&gl);
while(1) {
// Get an Event
pe = geventEventWait(&gl, TIME_INFINITE);
// Get an Event (assume it is a slider event)
pe = (GEventGWinSlider *)geventEventWait(&gl, TIME_INFINITE);
switch(pe->type) {
case GEVENT_GWIN_SLIDER:
//printf("Slider %s = %d\n", gwinGetText(((GEventGWinSlider *)pe)->gwin), ((GEventGWinSlider *)pe)->position);
switch(pe->action) {
case GSLIDER_EVENT_SET: sAction = "SET"; break;
case GSLIDER_EVENT_CANCEL: sAction = "CANCEL"; break;
case GSLIDER_EVENT_MOVE: sAction = "MOVE"; break;
case GSLIDER_EVENT_START: sAction = "START"; break;
default: sAction = "????"; break;
}
gwinPrintf(ghConsole, "Slider %s = %d%% %s\n", gwinGetText(pe->gwin), pe->position, sAction);
break;
default:
// Oops - not a slider event.
break;
}
}

159
src/gwin/gwin_slider.c
View File

@ -16,6 +16,8 @@
#include "gwin_class.h"
#define GSLIDER_FLG_EXTENDED_EVENTS (GWIN_FIRST_CONTROL_FLAG<<0)
#ifndef GWIN_SLIDER_DEAD_BAND
#define GWIN_SLIDER_DEAD_BAND 5
#endif
@ -24,23 +26,58 @@
#define GWIN_SLIDER_TOGGLE_INC 20 // How many toggles to go from minimum to maximum
#endif
// Calculate the slider position from the display position
static int CalculatePosFromDPos(GSliderObject *gsw) {
// Set the new position
if (gsw->w.g.width < gsw->w.g.height) {
if (gsw->dpos > gsw->w.g.height-GWIN_SLIDER_DEAD_BAND)
return gsw->min;
if (gsw->dpos < GWIN_SLIDER_DEAD_BAND)
return gsw->max;
return ((int)(gsw->w.g.height-1-gsw->dpos-GWIN_SLIDER_DEAD_BAND))*(gsw->max-gsw->min)/(gsw->w.g.height-2*GWIN_SLIDER_DEAD_BAND) + gsw->min;
}
if (gsw->dpos > gsw->w.g.width-GWIN_SLIDER_DEAD_BAND)
return gsw->max;
if (gsw->dpos < GWIN_SLIDER_DEAD_BAND)
return gsw->min;
return ((int)(gsw->dpos-GWIN_SLIDER_DEAD_BAND))*(gsw->max-gsw->min)/(gsw->w.g.width-2*GWIN_SLIDER_DEAD_BAND) + gsw->min;
}
// Send the slider event
static void SendSliderEvent(GWidgetObject *gw) {
static void SendSliderEvent(GSliderObject *gsw, uint8_t action) {
GSourceListener * psl;
GEvent * pe;
#define pse ((GEventGWinSlider *)pe)
// Trigger a GWIN Button Event
// Does this slider want more than just SET events?
if (action != GSLIDER_EVENT_SET && !(gsw->w.g.flags & GSLIDER_FLG_EXTENDED_EVENTS))
return;
psl = 0;
while ((psl = geventGetSourceListener(GWIDGET_SOURCE, psl))) {
// Work out which action to send.
// This precedence order helps provide some protection against missed events.
// Saving it into srcflags works regardless of if a buffer is available.
if (psl->srcflags < action)
psl->srcflags = action;
// Skip sending if no buffer is available
if (!(pe = geventGetEventBuffer(psl)))
continue;
// Fill in the event
pse->type = GEVENT_GWIN_SLIDER;
pse->gwin = (GHandle)gw;
pse->position = ((GSliderObject *)gw)->pos;
pse->gwin = (GHandle)gsw;
pse->action = psl->srcflags;
#if GWIN_WIDGET_TAGS
pse->tag = gw->tag;
pse->tag = gsw->w.tag;
#endif
// If it is a cancel or set use the defined position else use the calculated position.
pse->position = pse->action >= GSLIDER_EVENT_CANCEL ? gsw->pos : CalculatePosFromDPos(gsw);
// Cleanup and send.
psl->srcflags = 0;
geventSendEvent(psl);
}
@ -56,76 +93,72 @@ static void ResetDisplayPos(GSliderObject *gsw) {
}
#if GINPUT_NEED_MOUSE
// Set the display position from the mouse position
static void SetDisplayPosFromMouse(GSliderObject *gsw, coord_t x, coord_t y) {
if (gsw->w.g.width < gsw->w.g.height)
gsw->dpos = y < 0 ? 0 : (y >= gsw->w.g.height ? gsw->w.g.height-1 : y);
else
gsw->dpos = x < 0 ? 0 : (x >= gsw->w.g.width ? gsw->w.g.width-1 : x);
}
// A mouse up event
static void MouseUp(GWidgetObject *gw, coord_t x, coord_t y) {
#define gsw ((GSliderObject *)gw)
#define gh ((GHandle)gw)
#if GWIN_BUTTON_LAZY_RELEASE
// Clip to the slider
if (x < 0) x = 0;
else if (x >= gh->width) x = gh->width-1;
if (y < 0) y = 0;
else if (y >= gh->height) x = gh->height-1;
#else
#if !GWIN_BUTTON_LAZY_RELEASE
// Are we over the slider?
if (x < 0 || x >= gh->width || y < 0 || y >= gh->height) {
if (x < 0 || x >= gsw->w.g.width || y < 0 || y >= gsw->w.g.height) {
// No - restore the slider
ResetDisplayPos(gsw);
_gwinUpdate(gh);
_gwinUpdate(&gsw->w.g);
SendSliderEvent(gsw, GSLIDER_EVENT_CANCEL);
return;
}
#endif
// Set the new position
if (gh->width < gh->height) {
if (y > gh->height-GWIN_SLIDER_DEAD_BAND)
gsw->pos = gsw->min;
else if (y < GWIN_SLIDER_DEAD_BAND)
gsw->pos = gsw->max;
else
gsw->pos = (uint16_t)((int32_t)(gh->height-1-y-GWIN_SLIDER_DEAD_BAND)*(gsw->max-gsw->min)/(gh->height-2*GWIN_SLIDER_DEAD_BAND) + gsw->min);
} else {
if (x > gh->width-GWIN_SLIDER_DEAD_BAND)
gsw->pos = gsw->max;
else if (x < GWIN_SLIDER_DEAD_BAND)
gsw->pos = gsw->min;
else
gsw->pos = (uint16_t)((int32_t)(x-GWIN_SLIDER_DEAD_BAND)*(gsw->max-gsw->min)/(gh->width-2*GWIN_SLIDER_DEAD_BAND) + gsw->min);
}
SetDisplayPosFromMouse(gsw, x, y);
gsw->pos = CalculatePosFromDPos(gsw);
// Update the display
ResetDisplayPos(gsw);
_gwinUpdate(gh);
_gwinUpdate(&gsw->w.g);
// Generate the event
SendSliderEvent(gw);
#undef gh
SendSliderEvent(gsw, GSLIDER_EVENT_SET);
#undef gsw
}
// A mouse move (or mouse down) event
// A mouse down event
static void MouseDown(GWidgetObject *gw, coord_t x, coord_t y) {
#define gsw ((GSliderObject *)gw)
// Determine the display position
SetDisplayPosFromMouse(gsw, x, y);
// Update the display
_gwinUpdate(&gsw->w.g);
// Send the event
SendSliderEvent(gsw, GSLIDER_EVENT_START);
#undef gsw
}
// A mouse move event
static void MouseMove(GWidgetObject *gw, coord_t x, coord_t y) {
#define gsw ((GSliderObject *)gw)
// Determine the temporary display position (with range checking)
if (gw->g.width < gw->g.height) {
if (y < 0)
gsw->dpos = 0;
else if (y >= gw->g.height)
gsw->dpos = gw->g.height-1;
else
gsw->dpos = y;
} else {
if (x < 0)
gsw->dpos = 0;
else if (x >= gw->g.width)
gsw->dpos = gw->g.width-1;
else
gsw->dpos = x;
}
// Determine the display position
SetDisplayPosFromMouse(gsw, x, y);
// Update the display
_gwinUpdate(&gw->g);
_gwinUpdate(&gsw->w.g);
// Send the event
SendSliderEvent(gsw, GSLIDER_EVENT_MOVE);
#undef gsw
}
#endif
@ -136,11 +169,11 @@ static void ResetDisplayPos(GSliderObject *gsw) {
#define gsw ((GSliderObject *)gw)
if (role) {
gwinSliderSetPosition((GHandle)gw, gsw->pos+(gsw->max-gsw->min)/GWIN_SLIDER_TOGGLE_INC);
SendSliderEvent(gw);
gwinSliderSetPosition(&gsw->w.g, gsw->pos+(gsw->max-gsw->min)/GWIN_SLIDER_TOGGLE_INC);
SendSliderEvent(gsw, GSLIDER_EVENT_SET);
} else {
gwinSliderSetPosition((GHandle)gw, gsw->pos-(gsw->max-gsw->min)/GWIN_SLIDER_TOGGLE_INC);
SendSliderEvent(gw);
gwinSliderSetPosition(&gsw->w.g, gsw->pos-(gsw->max-gsw->min)/GWIN_SLIDER_TOGGLE_INC);
SendSliderEvent(gsw, GSLIDER_EVENT_SET);
}
#undef gsw
}
@ -167,10 +200,10 @@ static void ResetDisplayPos(GSliderObject *gsw) {
gsw->pos = (uint16_t)((uint32_t)value*(gsw->max-gsw->min)/max + gsw->min);
ResetDisplayPos(gsw);
_gwinUpdate((GHandle)gw);
_gwinUpdate(&gsw->w.g);
// Generate the event
SendSliderEvent(gw);
SendSliderEvent(gsw, GSLIDER_EVENT_SET);
#undef gsw
}
@ -197,7 +230,7 @@ static const gwidgetVMT sliderVMT = {
gwinSliderDraw_Std, // The default drawing routine
#if GINPUT_NEED_MOUSE
{
0, // Process mouse down events (NOT USED)
MouseDown, // Process mouse down events
MouseUp, // Process mouse up events
MouseMove, // Process mouse move events
},
@ -275,6 +308,16 @@ void gwinSliderSetPosition(GHandle gh, int pos) {
#undef gsw
}
void gwinSliderSendExtendedEvents(GHandle gh, bool_t enabled) {
if (gh->vmt != (gwinVMT *)&sliderVMT)
return;
if (enabled)
gh->flags |= GSLIDER_FLG_EXTENDED_EVENTS;
else
gh->flags &= ~GSLIDER_FLG_EXTENDED_EVENTS;
}
/*----------------------------------------------------------
* Custom Draw Routines
*----------------------------------------------------------*/

21
src/gwin/gwin_slider.h
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@ -27,12 +27,18 @@
#define GEVENT_GWIN_SLIDER (GEVENT_GWIN_CTRL_FIRST+1)
typedef struct GEventGWinSlider {
GEventType type; // The type of this event (GEVENT_GWIN_BUTTON)
GEventType type; // The type of this event (GEVENT_GWIN_SLIDER)
GHandle gwin; // The slider that is returning results
#if GWIN_WIDGET_TAGS
WidgetTag tag; // The slider tag
#endif
int position;
uint8_t action;
#define GSLIDER_EVENT_SET 4 /* Slider position is set. This is the only event returned by default */
#define GSLIDER_EVENT_CANCEL 3 /* Slider position changing has been cancelled */
#define GSLIDER_EVENT_START 2 /* Slider position has started changing */
#define GSLIDER_EVENT_MOVE 1 /* Slider position has been moved */
} GEventGWinSlider;
// There are currently no GEventGWinSlider listening flags - use 0
@ -123,6 +129,19 @@ void gwinSliderSetPosition(GHandle gh, int pos);
*/
#define gwinSliderGetPosition(gh) (((GSliderObject *)(gh))->pos)
/**
* @brief Should the slider send extended events.
*
* @param[in] gh The window handle (must be a slider window)
* @param[in] enabled TRUE to enable extended events, FALSE to disable them
*
* @note The slider by default will only send slider events with an action of GSLIDER_EVENT_SET.
* This call can be used to enable other slider action's to be sent as events
*
* @api
*/
void gwinSliderSendExtendedEvents(GHandle gh, bool_t enabled);
/**
* @brief Some custom slider drawing routines
* @details These function may be passed to @p gwinSetCustomDraw() to get different slider drawing styles