From abf4494701bce619dc33475a744b3276fd365c2e Mon Sep 17 00:00:00 2001
From: nakst <>
Date: Tue, 24 Aug 2021 19:00:54 +0100
Subject: [PATCH] sliders
---
desktop/gui.cpp | 95 ++++++++++++++++++++++++++++++++++++++++++
desktop/os.header | 15 ++++++-
desktop/settings.cpp | 11 ++++-
desktop/styles.header | 2 +
res/Theme Source.dat | Bin 50052 -> 50824 bytes
res/Themes/Theme.dat | Bin 52048 -> 52516 bytes
util/api_table.ini | 3 ++
7 files changed, 123 insertions(+), 3 deletions(-)
diff --git a/desktop/gui.cpp b/desktop/gui.cpp
index 3b8b0ce..168ba1b 100644
--- a/desktop/gui.cpp
+++ b/desktop/gui.cpp
@@ -4946,6 +4946,101 @@ EsIconDisplay *EsIconDisplayCreate(EsElement *parent, uint64_t flags, const EsSt
return display;
}
+// --------------------------------- Sliders.
+
+struct EsSlider : EsElement {
+ EsElement *point;
+ double value;
+ uint32_t steps;
+ int32_t dragOffset;
+ bool inDrag, endDrag;
+};
+
+int ProcessSliderPointMessage(EsElement *element, EsMessage *message) {
+ EsSlider *slider = (EsSlider *) EsElementGetLayoutParent(element);
+
+ if (message->type == ES_MSG_MOUSE_LEFT_DRAG) {
+ double range = slider->width - slider->point->currentStyle->preferredWidth;
+ slider->inDrag = true;
+ EsSliderSetValue(slider, (message->mouseDragged.newPositionX + element->offsetX - slider->dragOffset) / range);
+ } else if (message->type == ES_MSG_MOUSE_LEFT_UP && slider->inDrag) {
+ slider->inDrag = false;
+ slider->endDrag = true; // Force sending the update message.
+ EsSliderSetValue(slider, slider->value);
+ slider->endDrag = false;
+ } else if (message->type == ES_MSG_MOUSE_LEFT_DOWN) {
+ slider->dragOffset = message->mouseDown.positionX;
+ EsElementFocus(slider);
+ } else {
+ return 0;
+ }
+
+ return ES_HANDLED;
+}
+
+int ProcessSliderMessage(EsElement *element, EsMessage *message) {
+ EsSlider *slider = (EsSlider *) element;
+
+ if (message->type == ES_MSG_LAYOUT) {
+ int pointWidth = slider->point->currentStyle->preferredWidth;
+ int pointHeight = slider->point->currentStyle->preferredHeight;
+ slider->point->InternalMove(pointWidth, pointHeight, (slider->width - pointWidth) * slider->value, (slider->height - pointHeight) / 2);
+ } else if (message->type == ES_MSG_FOCUSED_START) {
+ slider->point->customStyleState |= THEME_STATE_FOCUSED_ITEM;
+ slider->point->MaybeRefreshStyle();
+ } else if (message->type == ES_MSG_FOCUSED_END) {
+ slider->point->customStyleState &= ~THEME_STATE_FOCUSED_ITEM;
+ slider->point->MaybeRefreshStyle();
+ } else if (message->type == ES_MSG_KEY_TYPED && message->keyboard.scancode == ES_SCANCODE_LEFT_ARROW) {
+ EsSliderSetValue(slider, slider->value - (slider->steps ? 1.0 / slider->steps : 0.02));
+ } else if (message->type == ES_MSG_KEY_TYPED && message->keyboard.scancode == ES_SCANCODE_RIGHT_ARROW) {
+ EsSliderSetValue(slider, slider->value + (slider->steps ? 1.0 / slider->steps : 0.02));
+ } else if (message->type == ES_MSG_KEY_TYPED && message->keyboard.scancode == ES_SCANCODE_HOME) {
+ EsSliderSetValue(slider, 0.0);
+ } else if (message->type == ES_MSG_KEY_TYPED && message->keyboard.scancode == ES_SCANCODE_END) {
+ EsSliderSetValue(slider, 1.0);
+ } else if (message->type == ES_MSG_PAINT) {
+ // TODO Draw ticks.
+ } else {
+ return 0;
+ }
+
+ return ES_HANDLED;
+}
+
+double EsSliderGetValue(EsSlider *slider) {
+ return slider->value;
+}
+
+void EsSliderSetValue(EsSlider *slider, double newValue, bool sendUpdatedMessage) {
+ newValue = ClampDouble(0.0, 1.0, newValue);
+
+ if (slider->steps) {
+ newValue = EsCRTfloor((slider->steps - 1) * newValue + 0.5) / (slider->steps - 1);
+ }
+
+ double previous = slider->value;
+ if (previous == newValue && !slider->endDrag) return;
+ slider->value = newValue;
+ EsElementRelayout(slider);
+
+ if (sendUpdatedMessage) {
+ EsMessage m = { ES_MSG_SLIDER_MOVED, .sliderMoved = { .value = newValue, .previous = previous, .inDrag = slider->inDrag } };
+ EsMessageSend(slider, &m);
+ }
+}
+
+EsSlider *EsSliderCreate(EsElement *parent, uint64_t flags, const EsStyle *style, double value, uint32_t steps) {
+ EsSlider *slider = (EsSlider *) EsHeapAllocate(sizeof(EsSlider), true);
+ slider->Initialise(parent, flags | ES_ELEMENT_FOCUSABLE, ProcessSliderMessage, style ?: ES_STYLE_SLIDER_TRACK);
+ slider->cName = "slider";
+ slider->point = EsCustomElementCreate(slider, ES_FLAGS_DEFAULT, ES_STYLE_SLIDER_POINT);
+ slider->point->messageUser = ProcessSliderPointMessage;
+ slider->steps = steps;
+ EsSliderSetValue(slider, value, false);
+ return slider;
+}
+
// --------------------------------- Message loop and core UI infrastructure.
void EsElement::PrintTree(int depth) {
diff --git a/desktop/os.header b/desktop/os.header
index aecab21..4a466ee 100644
--- a/desktop/os.header
+++ b/desktop/os.header
@@ -13,6 +13,7 @@ opaque_type EsSplitter EsElement;
opaque_type EsImageDisplay EsElement;
opaque_type EsListDisplay EsElement;
opaque_type EsCanvasPane EsElement;
+opaque_type EsSlider EsElement;
opaque_type EsTextPlan none;
opaque_type EsPaintTarget none;
opaque_type EsUndoManager none;
@@ -945,6 +946,7 @@ enum EsMessageType {
ES_MSG_COLOR_CHANGED = 0x3003 // Color well's color has changed. See message->colorChanged.
ES_MSG_LIST_DISPLAY_GET_MARKER = 0x3004 // Get the string for a marker in an EsListDisplay. See message->getContent.
ES_MSG_REORDER_ITEM_TEST = 0x3005
+ ES_MSG_SLIDER_MOVED = 0x3006 // The slider has been moved.
// Desktop messages:
ES_MSG_POWER_BUTTON_PRESSED = 0x4801
@@ -1637,6 +1639,11 @@ struct EsMessageScrollbarMoved {
int scroll, previous;
};
+struct EsMessageSliderMoved {
+ double value, previous;
+ bool inDrag;
+};
+
struct EsMessageColorChanged {
uint32_t newColor;
bool pickerClosed;
@@ -1782,6 +1789,7 @@ struct EsMessage {
// Specific element messages:
EsMessageScrollbarMoved scrollbarMoved;
+ EsMessageSliderMoved sliderMoved;
EsMessageColorChanged colorChanged;
EsMessageNumberDragDelta numberDragDelta;
EsMessageNumberUpdated numberUpdated;
@@ -2315,7 +2323,6 @@ function EsElement *EsButtonGetCheckBuddy(EsButton *button); // TODO Public pro
// Textboxes.
function EsTextbox *EsTextboxCreate(EsElement *parent, uint64_t flags = ES_FLAGS_DEFAULT, const EsStyle *style = ES_NULL);
-
function bool EsTextboxFind(EsTextbox *textbox, STRING string, int32_t *line, int32_t *byte, uint32_t flags);
function void EsTextboxInsert(EsTextbox *textbox, STRING string = BLANK_STRING, bool sendUpdatedMessage = true); // Deletes existing selection first.
function char *EsTextboxGetContents(EsTextbox *textbox, size_t *bytes = ES_NULL, uint32_t flags = ES_FLAGS_DEFAULT); // Result will be zero-terminated; free with EsHeapFree.
@@ -2336,6 +2343,12 @@ function void EsTextboxSetTextStyle(EsTextbox *textbox, const EsTextStyle *textS
function void EsTextboxSetupSyntaxHighlighting(EsTextbox *textbox, uint32_t language, uint32_t *customColors = ES_NULL, size_t customColorCount = 0);
function void EsTextboxStartEdit(EsTextbox *textbox);
+// Sliders.
+
+function EsSlider *EsSliderCreate(EsElement *parent, uint64_t flags = ES_FLAGS_DEFAULT, const EsStyle *style = ES_NULL, double value = 0, uint32_t steps = 0);
+function double EsSliderGetValue(EsSlider *slider);
+function void EsSliderSetValue(EsSlider *slider, double newValue, bool sendUpdatedMessage = true);
+
// Panels, spacers and splitters.
function EsPanel *EsPanelCreate(EsElement *parent, uint64_t flags = ES_FLAGS_DEFAULT, const EsStyle *style = ES_NULL);
diff --git a/desktop/settings.cpp b/desktop/settings.cpp
index a38f0be..7e4717e 100644
--- a/desktop/settings.cpp
+++ b/desktop/settings.cpp
@@ -324,6 +324,15 @@ void SettingsPageMouse(EsElement *element, SettingsPage *page) {
// TODO Use a slider instead?
SettingsAddNumberBox(table, INTERFACE_STRING(DesktopSettingsMouseSpeed), 'M', "general", "cursor_speed", -20, 20, nullptr, 0, 0.05);
+ table = EsPanelCreate(container, ES_CELL_H_FILL, &styleSettingsCheckboxGroup);
+ SettingsAddCheckbox(table, INTERFACE_STRING(DesktopSettingsMouseUseAcceleration), 'C', "general", "use_cursor_acceleration");
+ SettingsAddCheckbox(table, INTERFACE_STRING(DesktopSettingsMouseSlowOnAlt), 'O', "general", "use_cursor_alt_slow");
+
+ EsSpacerCreate(container, ES_CELL_H_FILL, ES_STYLE_BUTTON_GROUP_SEPARATOR);
+
+ table = EsPanelCreate(container, ES_CELL_H_FILL | ES_PANEL_TABLE | ES_PANEL_HORIZONTAL, &styleSettingsTable);
+ EsPanelSetBands(table, 2);
+
// TODO Mouse trails.
EsTextDisplayCreate(table, ES_CELL_H_RIGHT | ES_CELL_H_PUSH, 0, INTERFACE_STRING(DesktopSettingsMouseCursorTrails));
textbox = EsTextboxCreate(table, ES_CELL_H_LEFT | ES_CELL_H_PUSH | ES_TEXTBOX_EDIT_BASED, &styleSettingsNumberTextbox);
@@ -342,8 +351,6 @@ void SettingsPageMouse(EsElement *element, SettingsPage *page) {
SettingsAddCheckbox(table, INTERFACE_STRING(DesktopSettingsMouseSwapLeftAndRightButtons), 'B', "general", "swap_left_and_right_buttons");
SettingsAddCheckbox(table, INTERFACE_STRING(DesktopSettingsMouseShowShadow), 'W', "general", "show_cursor_shadow");
SettingsAddCheckbox(table, INTERFACE_STRING(DesktopSettingsMouseLocateCursorOnCtrl), 'L', "general", "locate_cursor_on_ctrl");
- SettingsAddCheckbox(table, INTERFACE_STRING(DesktopSettingsMouseUseAcceleration), 'C', "general", "use_cursor_acceleration");
- SettingsAddCheckbox(table, INTERFACE_STRING(DesktopSettingsMouseSlowOnAlt), 'O', "general", "use_cursor_alt_slow");
EsSpacerCreate(container, ES_CELL_H_FILL, ES_STYLE_BUTTON_GROUP_SEPARATOR);
diff --git a/desktop/styles.header b/desktop/styles.header
index 98d21d2..bcaecb7 100644
--- a/desktop/styles.header
+++ b/desktop/styles.header
@@ -88,6 +88,8 @@ define_private ES_STYLE_SCROLLBAR_THUMB_HORIZONTAL (ES_STYLE_CAST(1367))
define_private ES_STYLE_SCROLLBAR_THUMB_VERTICAL (ES_STYLE_CAST(1369))
define_private ES_STYLE_SCROLLBAR_PAD (ES_STYLE_CAST(1371))
define ES_STYLE_SEPARATOR_HORIZONTAL (ES_STYLE_CAST(1373))
+define_private ES_STYLE_SLIDER_POINT (ES_STYLE_CAST(1607))
+define_private ES_STYLE_SLIDER_TRACK (ES_STYLE_CAST(1601))
define_private ES_STYLE_SPLIT_BAR_HORIZONTAL (ES_STYLE_CAST(1375))
define_private ES_STYLE_SPLIT_BAR_VERTICAL (ES_STYLE_CAST(1377))
define_private ES_STYLE_TASK_BAR_BAR (ES_STYLE_CAST(1379))
diff --git a/res/Theme Source.dat b/res/Theme Source.dat
index 54389e5b6f4d0d7a7c15f4b4d0dc39197e22e1e3..2bf4adf9199a24638b53aca9a8bb62e50cc9de30 100644
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diff --git a/res/Themes/Theme.dat b/res/Themes/Theme.dat
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diff --git a/util/api_table.ini b/util/api_table.ini
index c2ad139..44645a6 100644
--- a/util/api_table.ini
+++ b/util/api_table.ini
@@ -294,7 +294,9 @@ EsTextPlanGetLineCount=292
EsTextPlanDestroy=293
EsTextDisplaySetContents=294
EsSystemConfigurationReadInteger=295
+EsSliderCreate=296
EsSystemConfigurationReadString=297
+EsSliderGetValue=298
EsGameControllerStatePoll=299
EsInstanceDestroy=300
EsRandomU8=301
@@ -418,3 +420,4 @@ EsFontDatabaseInsertFile=418
EsFileStoreGetSize=419
EsFileStoreMap=420
EsTimerCancel=421
+EsSliderSetValue=422