374 lines
11 KiB
C
374 lines
11 KiB
C
/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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/**
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* @file src/gwin/slider.c
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* @brief GWIN sub-system slider code
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*/
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#include "gfx.h"
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#if (GFX_USE_GWIN && GWIN_NEED_SLIDER) || defined(__DOXYGEN__)
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#include "src/gwin/class_gwin.h"
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#ifndef GWIN_SLIDER_DEAD_BAND
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#define GWIN_SLIDER_DEAD_BAND 5
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#endif
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#ifndef GWIN_SLIDER_TOGGLE_INC
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#define GWIN_SLIDER_TOGGLE_INC 20 // How many toggles to go from minimum to maximum
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#endif
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// Send the slider event
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static void SendSliderEvent(GWidgetObject *gw) {
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GSourceListener * psl;
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GEvent * pe;
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#define pse ((GEventGWinSlider *)pe)
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// Trigger a GWIN Button Event
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psl = 0;
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while ((psl = geventGetSourceListener(GWIDGET_SOURCE, psl))) {
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if (!(pe = geventGetEventBuffer(psl)))
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continue;
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pse->type = GEVENT_GWIN_SLIDER;
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pse->slider = (GHandle)gw;
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pse->position = ((GSliderObject *)gw)->pos;
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geventSendEvent(psl);
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}
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#undef pse
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}
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// Reset the display position back to the value predicted by the saved slider position
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static void ResetDisplayPos(GSliderObject *gsw) {
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if (gsw->w.g.width < gsw->w.g.height)
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gsw->dpos = gsw->w.g.height-1-((gsw->w.g.height-1)*(gsw->pos-gsw->min))/(gsw->max-gsw->min);
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else
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gsw->dpos = ((gsw->w.g.width-1)*(gsw->pos-gsw->min))/(gsw->max-gsw->min);
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}
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#if GINPUT_NEED_MOUSE
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// A mouse up event
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static void MouseUp(GWidgetObject *gw, coord_t x, coord_t y) {
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#define gsw ((GSliderObject *)gw)
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#define gh ((GHandle)gw)
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#if GWIN_BUTTON_LAZY_RELEASE
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// Clip to the slider
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if (x < 0) x = 0;
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else if (x >= gh->width) x = gh->width-1;
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if (y < 0) y = 0;
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else if (y >= gh->height) x = gh->height-1;
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#else
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// Are we over the slider?
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if (x < 0 || x >= gh->width || y < 0 || y >= gh->height) {
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// No - restore the slider
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ResetDisplayPos(gsw);
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_gwidgetUpdate(gh);
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return;
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}
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#endif
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// Set the new position
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if (gh->width < gh->height) {
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if (y > gh->height-GWIN_SLIDER_DEAD_BAND)
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gsw->pos = gsw->min;
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else if (y < GWIN_SLIDER_DEAD_BAND)
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gsw->pos = gsw->max;
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else
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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);
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} else {
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if (x > gh->width-GWIN_SLIDER_DEAD_BAND)
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gsw->pos = gsw->max;
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else if (x < GWIN_SLIDER_DEAD_BAND)
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gsw->pos = gsw->min;
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else
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gsw->pos = (uint16_t)((int32_t)(x-GWIN_SLIDER_DEAD_BAND)*(gsw->max-gsw->min)/(gh->width-2*GWIN_SLIDER_DEAD_BAND) + gsw->min);
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}
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ResetDisplayPos(gsw);
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_gwidgetUpdate(gh);
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// Generate the event
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SendSliderEvent(gw);
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#undef gh
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#undef gsw
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}
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// A mouse move (or mouse down) event
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static void MouseMove(GWidgetObject *gw, coord_t x, coord_t y) {
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#define gsw ((GSliderObject *)gw)
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// Determine the temporary display position (with range checking)
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if (gw->g.width < gw->g.height) {
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if (y < 0)
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gsw->dpos = 0;
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else if (y >= gw->g.height)
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gsw->dpos = gw->g.height-1;
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else
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gsw->dpos = y;
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} else {
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if (x < 0)
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gsw->dpos = 0;
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else if (x >= gw->g.width)
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gsw->dpos = gw->g.width-1;
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else
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gsw->dpos = x;
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}
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// Update the display
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_gwidgetUpdate(&gw->g);
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#undef gsw
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}
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#endif
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#if GINPUT_NEED_TOGGLE
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// A toggle on has occurred
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static void ToggleOn(GWidgetObject *gw, uint16_t role) {
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#define gsw ((GSliderObject *)gw)
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if (role) {
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gwinSliderSetPosition((GHandle)gw, gsw->pos+(gsw->max-gsw->min)/GWIN_SLIDER_TOGGLE_INC);
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SendSliderEvent(gw);
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} else {
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gwinSliderSetPosition((GHandle)gw, gsw->pos-(gsw->max-gsw->min)/GWIN_SLIDER_TOGGLE_INC);
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SendSliderEvent(gw);
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}
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#undef gsw
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}
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static void ToggleAssign(GWidgetObject *gw, uint16_t role, uint16_t instance) {
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if (role)
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((GSliderObject *)gw)->t_up = instance;
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else
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((GSliderObject *)gw)->t_dn = instance;
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}
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static uint16_t ToggleGet(GWidgetObject *gw, uint16_t role) {
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return role ? ((GSliderObject *)gw)->t_up : ((GSliderObject *)gw)->t_dn;
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}
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#endif
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#if GINPUT_NEED_DIAL
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// A dial move event
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static void DialMove(GWidgetObject *gw, uint16_t role, uint16_t value, uint16_t max) {
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#define gsw ((GSliderObject *)gw)
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(void) role;
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// Set the new position
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gsw->pos = (uint16_t)((uint32_t)value*(gsw->max-gsw->min)/max + gsw->min);
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ResetDisplayPos(gsw);
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_gwidgetUpdate((GHandle)gw);
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// Generate the event
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SendSliderEvent(gw);
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#undef gsw
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}
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static void DialAssign(GWidgetObject *gw, uint16_t role, uint16_t instance) {
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(void) role;
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((GSliderObject *)gw)->dial = instance;
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}
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static uint16_t DialGet(GWidgetObject *gw, uint16_t role) {
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(void) role;
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return ((GSliderObject *)gw)->dial;
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}
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#endif
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// The slider VMT table
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static const gwidgetVMT sliderVMT = {
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{
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"Slider", // The classname
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sizeof(GSliderObject), // The object size
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_gwidgetDestroy, // The destroy routine
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_gwidgetRedraw, // The redraw routine
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0, // The after-clear routine
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},
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gwinSliderDraw_Std, // The default drawing routine
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#if GINPUT_NEED_MOUSE
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{
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0, // Process mouse down events (NOT USED)
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MouseUp, // Process mouse up events
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MouseMove, // Process mouse move events
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},
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#endif
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#if GINPUT_NEED_TOGGLE
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{
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2, // 1 toggle role
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ToggleAssign, // Assign Toggles
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ToggleGet, // Get Toggles
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0, // Process toggle off events (NOT USED)
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ToggleOn, // Process toggle on events
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},
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#endif
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#if GINPUT_NEED_DIAL
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{
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1, // 1 dial roles
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DialAssign, // Assign Dials
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DialGet, // Get Dials
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DialMove, // Process dial move events
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},
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#endif
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};
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GHandle gwinGSliderCreate(GDisplay *g, GSliderObject *gs, const GWidgetInit *pInit) {
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if (!(gs = (GSliderObject *)_gwidgetCreate(g, &gs->w, pInit, &sliderVMT)))
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return 0;
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#if GINPUT_NEED_TOGGLE
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gs->t_dn = GWIDGET_NO_INSTANCE;
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gs->t_up = GWIDGET_NO_INSTANCE;
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#endif
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#if GINPUT_NEED_DIAL
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gs->dial = GWIDGET_NO_INSTANCE;
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#endif
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gs->min = 0;
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gs->max = 100;
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gs->pos = 0;
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ResetDisplayPos(gs);
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gwinSetVisible((GHandle)gs, pInit->g.show);
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return (GHandle)gs;
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}
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void gwinSliderSetRange(GHandle gh, int min, int max) {
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#define gsw ((GSliderObject *)gh)
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if (gh->vmt != (gwinVMT *)&sliderVMT)
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return;
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if (min == max) // prevent divide by 0 errors.
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max++;
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gsw->min = min;
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gsw->max = max;
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gsw->pos = min;
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ResetDisplayPos(gsw);
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#undef gsw
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}
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void gwinSliderSetPosition(GHandle gh, int pos) {
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#define gsw ((GSliderObject *)gh)
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if (gh->vmt != (gwinVMT *)&sliderVMT)
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return;
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if (gsw->min <= gsw->max) {
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if (pos < gsw->min) gsw->pos = gsw->min;
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else if (pos > gsw->max) gsw->pos = gsw->max;
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else gsw->pos = pos;
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} else {
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if (pos > gsw->min) gsw->pos = gsw->min;
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else if (pos < gsw->max) gsw->pos = gsw->max;
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else gsw->pos = pos;
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}
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ResetDisplayPos(gsw);
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_gwidgetUpdate(gh);
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#undef gsw
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}
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/*----------------------------------------------------------
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* Custom Draw Routines
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*----------------------------------------------------------*/
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void gwinSliderDraw_Std(GWidgetObject *gw, void *param) {
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#define gsw ((GSliderObject *)gw)
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const GColorSet * pcol;
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(void) param;
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if (gw->g.vmt != (gwinVMT *)&sliderVMT)
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return;
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if ((gw->g.flags & GWIN_FLG_SYSENABLED))
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pcol = &gw->pstyle->pressed;
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else
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pcol = &gw->pstyle->disabled;
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if (gw->g.width < gw->g.height) { // Vertical slider
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if (gsw->dpos != gw->g.height-1)
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gdispGFillArea(gw->g.display, gw->g.x, gw->g.y+gsw->dpos, gw->g.width, gw->g.height - gsw->dpos, pcol->progress); // Active Area
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if (gsw->dpos != 0)
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gdispGFillArea(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gsw->dpos, gw->pstyle->enabled.progress); // Inactive area
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gdispGDrawBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, pcol->edge); // Edge
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gdispGDrawLine(gw->g.display, gw->g.x, gw->g.y+gsw->dpos, gw->g.x+gw->g.width-1, gw->g.y+gsw->dpos, pcol->edge); // Thumb
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if (gsw->dpos >= 2)
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gdispGDrawLine(gw->g.display, gw->g.x, gw->g.y+gsw->dpos-2, gw->g.x+gw->g.width-1, gw->g.y+gsw->dpos-2, pcol->edge); // Thumb
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if (gsw->dpos <= gw->g.height-2)
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gdispGDrawLine(gw->g.display, gw->g.x, gw->g.y+gsw->dpos+2, gw->g.x+gw->g.width-1, gw->g.y+gsw->dpos+2, pcol->edge); // Thumb
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// Horizontal slider
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} else {
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if (gsw->dpos != gw->g.width-1)
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gdispGFillArea(gw->g.display, gw->g.x+gsw->dpos, gw->g.y, gw->g.width-gsw->dpos, gw->g.height, gw->pstyle->enabled.progress); // Inactive area
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if (gsw->dpos != 0)
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gdispGFillArea(gw->g.display, gw->g.x, gw->g.y, gsw->dpos, gw->g.height, pcol->progress); // Active Area
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gdispGDrawBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, pcol->edge); // Edge
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gdispGDrawLine(gw->g.display, gw->g.x+gsw->dpos, gw->g.y, gw->g.x+gsw->dpos, gw->g.y+gw->g.height-1, pcol->edge); // Thumb
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if (gsw->dpos >= 2)
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gdispGDrawLine(gw->g.display, gw->g.x+gsw->dpos-2, gw->g.y, gw->g.x+gsw->dpos-2, gw->g.y+gw->g.height-1, pcol->edge); // Thumb
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if (gsw->dpos <= gw->g.width-2)
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gdispGDrawLine(gw->g.display, gw->g.x+gsw->dpos+2, gw->g.y, gw->g.x+gsw->dpos+2, gw->g.y+gw->g.height-1, pcol->edge); // Thumb
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}
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gdispGDrawStringBox(gw->g.display, gw->g.x+1, gw->g.y+1, gw->g.width-2, gw->g.height-2, gw->text, gw->g.font, pcol->text, justifyCenter);
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#undef gsw
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}
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#if GDISP_NEED_IMAGE
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void gwinSliderDraw_Image(GWidgetObject *gw, void *param) {
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#define gsw ((GSliderObject *)gw)
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#define gi ((gdispImage *)param)
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const GColorSet * pcol;
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coord_t z, v;
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if (gw->g.vmt != (gwinVMT *)&sliderVMT)
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return;
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if ((gw->g.flags & GWIN_FLG_SYSENABLED))
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pcol = &gw->pstyle->pressed;
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else
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pcol = &gw->pstyle->disabled;
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if (gw->g.width < gw->g.height) { // Vertical slider
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if (gsw->dpos != 0) // The unfilled area
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gdispGFillArea(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gsw->dpos, gw->pstyle->enabled.progress); // Inactive area
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if (gsw->dpos != gw->g.height-1) { // The filled area
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for(z=gw->g.height, v=gi->height; z > gsw->dpos;) {
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z -= v;
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if (z < gsw->dpos) {
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v -= gsw->dpos - z;
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z = gsw->dpos;
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}
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gdispGImageDraw(gw->g.display, gi, gw->g.x, gw->g.y+z, gw->g.width, v, 0, gi->height-v);
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}
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}
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gdispGDrawBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, pcol->edge); // Edge
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gdispGDrawLine(gw->g.display, gw->g.x, gw->g.y+gsw->dpos, gw->g.x+gw->g.width-1, gw->g.y+gsw->dpos, pcol->edge); // Thumb
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// Horizontal slider
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} else {
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if (gsw->dpos != gw->g.width-1) // The unfilled area
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gdispGFillArea(gw->g.display, gw->g.x+gsw->dpos, gw->g.y, gw->g.width-gsw->dpos, gw->g.height, gw->pstyle->enabled.progress); // Inactive area
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if (gsw->dpos != 0) { // The filled area
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for(z=0, v=gi->width; z < gsw->dpos; z += v) {
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if (z+v > gsw->dpos)
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v -= z+v - gsw->dpos;
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gdispGImageDraw(gw->g.display, gi, gw->g.x+z, gw->g.y, v, gw->g.height, 0, 0);
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}
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}
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gdispGDrawBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, pcol->edge); // Edge
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gdispGDrawLine(gw->g.display, gw->g.x+gsw->dpos, gw->g.y, gw->g.x+gsw->dpos, gw->g.y+gw->g.height-1, pcol->edge); // Thumb
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}
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gdispGDrawStringBox(gw->g.display, gw->g.x+1, gw->g.y+1, gw->g.width-2, gw->g.height-2, gw->text, gw->g.font, pcol->text, justifyCenter);
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#undef gsw
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}
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#endif /* GDISP_NEED_IMAGE */
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#endif /* GFX_USE_GWIN && GWIN_NEED_BUTTON */
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